Summarize the following court judgment. rl.) Petition No. 96 of 1989. (Under Article 32 of the Constitution of India). Nand Lal	 S.K. Bagga and Mrs. S.K. Bagga for the Petitioner. V.C. Mahajan Mrs. Indra Sawhney	 Ms. A. Subhashini	 Aruneshwar Gupta	 Surya Kant and I. Makwana for the Respondents. The Judgment of the Court was delivered by AHMADI	 J. Liberty is the life line of every human being. Life without liberty is `lasting ' but not `living '. Liberty is	 therefore	 considered one of the most precious and cherished possessions of a human being. Any attempt to take liberties with the liberty of a human being is visited with resistance. Since no human being can tolerate fetters on his personal liberty it is not surprising that the petitioner Ashok Kumar alias Golu continues to struggle for his liberty	 premature release	 not fully content with the enunciation of the law in this behalf 864 by this Court in Maru Ram vs Union of India	 {1981] 1 SCR 1196. The questions of law which are raised in this petition brought under Article 32 of the Constitution arise upon facts of which we give an abridged statement. On the basis of a FIR lodged on October 21	 1977	 the petitioner was arrested on the next day and he along with others was chargesheeted for the murder of one Prem Nagpal. The petitioner was tried and convicted for murder on December 20	 1978 in Sessions Case No. 32 of 1978 by the learned Sessions Judge	 Ganganagar	 and was ordered to suffer imprisonment for life. His appeal	 Criminal Appeal No. 40 of 1979	 was dismissed by the High Court of Rajasthan. Since then he is serving time. It appears that he filed a Habeas Corpus Writ Petition No. 2963 of 1987 in the High Court of Rajasthan at Jodhpur for premature release on the plea that he was entitled to be considered for such release under the relevant rules of Rajasthan Prisons (Shortening of Sentences) Rules	 1958	 (hereinafter alluded to as `the 1958 Rules ') notwithstanding the insertion of Section 433A in the Code of Criminal Procedure	 1973 (hereinafter called `the Code ') with effect from December 18	 1978	 just two days before his conviction. His grievance was that he was being denied the benefit of early release under the 1958 Rules under the garb of the newly added Section 433A	 on the ground that it places a statutory embargo against the release of such a convict `unless he has served atleast 14 years of imprisonment '. He contended that the said provision could not curtail the constitutional power vested in the Governor by virtue of Article 161 of the Constitution which had to be exercised on the advice of the Council of Ministers which advice could be based on a variety of considerations including the provisions of the 1958 Rules. The writ petition was	 however	 dismissed by the High Court on October 31	 1988	 on the ground that it was premature inasmuch as the petitioner 's two representations	 one to the Governor and another to the State Home Minister	 were pending consideration. The High Court directed that they should be disposed of within one month. In this view of the matter the High Court did not deem it necessary to consider the various questions of law raised in the petition on merits. After the rejection of his writ petition by the High Court	 the petitioner through his counsel addressed a letter dated November 28	 1988 to the Governor inviting his attention to the earlier representation dated August 29	 1988 and requesting him to take a decision thereon within a month as observed by the High Court. Failing to secure his early release notwithstanding the above efforts	 the petitioner has invoked the extraordinary jurisdiction of this Court under Article 32 of the Constitution. 865 The petitioner 's case in a nutshell is that under the provisions of the 1958 Rules	 a `lifer ' who has served an actual sentence of about 9 years and 3 months is entitled to be considered for premature release if the total sentence including remissions works out to 14 years and he is reported to be of good behaviour. However	 the petitioner contends	 his case for premature release is not considered by the concerned authorities in view of the newly added section 433A of the Code on the interpretation that by virtue of the said provision the case of a `lifer ' cannot be considered for early release unless he has completed 14 years of actual incarceration	 the provisions of sections 432 and 433 of the Code as well as the 1958 Rules notwithstanding. According to him	 even if the provisions of sections 432 and 433 of the Code do not come into play unless a convict sentenced to life imprisonment has completed actual incarceration for 14 years as required by section 433A	 the authorities have failed to realise that section 433A cannot override the constitutional power conferred by Articles 72 and 161 of the Constitutional on the President and the Governor	 respectively	 and the State Government i.e.	 the Council of Ministers	 could advise the Governor to exercise power under Article 161 treating the 1958 Rules as guidelines. Since the petitioner had already moved the Governor under Article 161 of the Constitution it was incumbent on the State Government to consider his request for early release	 notwithstanding section 433A	 and failure to do so entitled the petitioner to immediate release as his continued detention was	 wholly illegal and invalid. In support of this contention the petitioner has placed reliance on the ratio of Maru Ram 's decision. The petitioner brands section 433A of the Code to be a `legislative fraud ' inasmuch as the said provision was got approved by the Parliament on the assurance that the said provision is complementary to the various amendments proposed in the Indian Penal Code. In the alternative it is contended that in any case this Court should by a process of interpretation limit the scope of section 433A of the Code to those cases only to which it would have been limited had the legislation proposing amendments in the Indian Penal Code gone through. In any case after the decision of this Court in Maru Ram 's case	 the efficacy of section 433A is considerably reduced and the petitioner is entitled to early release by virtue of the power contained in ARticle 161 read with the 1958 Rules even if guidelines are not formulated notwithstanding the subsequent decision of this Court in Kehar Singh vs Union of India	 ; Counsel submitted that after the decision of this Court in Bhagirath vs Delhi Administration	 ; whereunder this Court extended the benefit of section 428 of the Code even 866 to life convicts	 the ratio in Gopal Godse vs State of Maharashtra	 ; had undergone a change. On this broad approach	 counsel for the petitioner	 formulated questions of law which may be stated as under: 1. Whether the insertion of section 433A in the Code was a legislative fraud inasmuch as the connected legislation	 namely	 the Indian Penal Code (Amendment) Bill XLII of 1972 did not become law although passed by the Rajya Sabha as the IPC (Amendment) Act	 1978	 on November 23	 1978? 2. Whether on the ration of Maru Ram 's decision	 in the absence of any guidelines formulated by the State under Article 72 of 161 of the Constitution	 section 433A of the Code would not apply to life convicts and the 1958 Rules will prevail for the purpose of exercise of power under Article 72 of 161 of the Constitution? Inter connected with this question	 the following .l questions were raised: a) Whether Maru Ram 's decision is in conflict with Kehar Singh 's Judgment on the question of necessity or otherwise of guidelines for the exercise of power under Article 7 and 161 of the constitution? b) Whether the use of two expressions "remission" and "remit" in Articles 72 and 161 convey two different meanings and if yes	 whether the content f power in the two expressions is different? c) Whether the persons sentenced to death by Court	 whose death sentence has been commuted to life imprisonment by executive clemency	 form a distinct and separate class for the purpose of application of section 433A of the Code as well as for the purpose of necessity (or not) of guidelines for premature release in exercise of power under Articles 72 and 161	 from the persons who at the initial stage itself were sentenced to life imprisonment by court verdict? And whether in the latter case guidelines are mandatory under Article 72 and 161 and a well designed scheme of remission must be formulated if the constitutional guarantee under Articles 14 and 21 is to be preserved? d) Whether the whole law of remission needs to be reviewed after Bhagirath 's case wherein this Court held that imprisonment 867 for life is also an imprisonment for a term and that a life convict is entitled to set off under section 428 Cr. P.C.? e) Whether it is permissible in law to grant conditional premature release to a life convict even before completion of 14 years of actual imprisonment notwithstanding section 433A of the Code? If yes	 whether the grant of such conditional release will be treated as the prisoner actually serving time for the purpose of section 433A of the Code? First the legislative history. The Law Commission had in its 42nd Report submitted in June	 1971 suggested numerous changes in the Indian Penal Code (IPC). Pursuant thereto an Amendment Bill No. XLII of 1972 was introduced in the Rajya Sabha on December 11	 1972 proposed wide ranging changes in the IPC. One change proposed was to bifurcate section 302	 IPC into two parts	 the first part providing that except in cases specified in the second part	 the punishment for murder will be imprisonment for life whereas for the more heinous crimes enumerated in clauses (a) to (c)	 of sub section (2) the punishment may be death or imprisonment for life. A motion for reference of the Bill to the Joint Committee of both the Houses was moved in the Rajya Sabha on December 14	 1972 by the then Minister of State in the Ministry of Home Affairs and was adopted on the same day. The Lok Sabha concurred in the motion of the Rajya Sabha on December 21	 1972. The Joint Parliamentary Committee presented its report to the Rajya Sabha on January 29	 1976 recommending changes in several clauses of the Bill. While retaining the amendment proposed in section 302	 IPC	 it recommended inclusion of one more clause (d) after clause (c) in sub section (2) thereof and at the same time recommended deletion of section 303	 IPC. It also recommended substitution of the existing section 57	 IPC	 by a totally new section	 the proviso whereto has relevance. The proposed proviso was as under: "Provided that where a sentence of imprisonment for life is imposed on conviction of a person for a capital offence	 or where a sentence of death imposed on a person has been commuted into one of imprisonment for life	 such person shall not be released from prison unless he had served at least fourteen years of imprisonment. " The reason which impelled the Committee to introduce the above proviso was "That sometimes due to grant of remission even murderers sentenced or commuted to life imprisonment were released at the end 868 of 5 to 6 years. " The Committee	 therefore	 felt that such a convict should not be released unless he has served atleast 14 years of imprisonment. It is evident from the scheme of the aforesaid recommendations that the proviso was intended to apply to only those convicts who were convicted for a capital offence (this expression was defined by clause 15 of the Bill recommending substitution of section 40	 IPC	 as `an offence for which death is one of the punishments provided by law ') or whose sentence of death was commuted into one of imprisonment for life and not to those who were governed by the first part of the proposed section 302	 IPC. It was pointed out by counsel that similar benefit would have accrued to offenders convicted for offences covered under section 305	 307 or 396 if the proposed sections 305	 307(b) and 396(b) had come into being. That	 contends the petitioner 's counsel	 would have considerably narrowed down the scope of the proposed proviso to section 57	 IPC	 and consequently the rigour of the said provision would have fallen on a tiny minority of offenders guilty of a capital offence. Pursuant to the recommendations made by the Committee	 two bills	 namely	 the IPC (Amendment) Bill	 1978	 came to be introduced	 the former was passed with changes by the Rajya Sabha on November 23	 1978 while the latter was introduced in the Lok Sabha on November 8	 1978	 and in the Rajya Sabha on December 5	 1978. The proposal to add a proviso to the proposed section 57	 IPC did not find favour as it was thought that the said subject matter appropriately related to Chapter XXXII of the Code and accordingly the said provision was introduced as section 433A in the Code. While the amendments to the Code became law with effect from December 18	 1978	 the IPC amendments	 though passed by the Rajya Sabha could not be got through the Lok Sabha and lapsed. It may here be mentioned that the IPC Bill as approved by the Rajya Sabha contained the proposal to divide section 302 into two parts	 in fact an additional clause was sought to be introduced in the second part thereof and sections 305	 307 and 396 were also sought to be amended as proposed by the Committee. This in brief is the legislative history. In the backdrop of the said legislative history	 counsel for the petitioner argued that a legislative fraud was practised by enacting section 433A of the Code and failing to carry out the corresponding changes in sections 302	 305	 307	 396	 etc.	 assured by the passing of the Indian Penal Code (Amendment) Act	 1978	 by the Rajya Sabha on November 23	 1978. According to him it is evident from the scheme of the twin Amendment Bills that the legislative intent was to apply the rigour of section 433A of the Code to a small number of heinous 869 crimes which fell within the meaning of the expression capital offence. It was to achieve this objective that section 302	 IPC was proposed to be bifurcated so that a large number of murders would fall within the first part of the proposed provision which prescribed the punishment of life imprisonment only and thus fell beyond the mischief of section 433A of the Code. To buttress his submission our attention was invited to Annexure II to the petition which is a copy of the letter dated July 10	 1979	 written by the Joint Secretary in the Ministry of Home Affairs to Home Secretaries of all the concerned State Governments explaining the purport of the newly added section 433A. After explaining that section 57	 IPC	 had a limited scope	 namely	 calculating fractions of terms of imprisonment only	 he proceeds to state in paragraph 3 of the letter as under: "The restrictions imposed by section 433A applies only to those life convicts who are convicted for offences for which death is one of the punishments prescribed by law. In the Indian Penal Code (Amendment) Bill	 1978 as passed by the Rajya Sabha and now pending in the Lok Sabha	 section 302 is proposed to be amended so as to provide that the normal punishment for murder shall be imprisonment for life and that only in certain cases of aggravating circumstances will the court have discretion to award death sentences. " Then in paragraph 4 he proceeds to clarify as under: "Even regarding these convicts the restriction imposed by section 433A is not absolute for	 the Constitutional power of the Governor under Article 161 to commute and remit sentences remains unaffected and can be exercised in each case in which the exercise of this power is considered suitable. " Then in paragraph 4 he proceeds to clarify as under: "Even regarding these convicts the restriction imposed by section 433A is not absolute for	 the Constitutional power of the Governor under Article 161 to commute and remit sentences remains unaffected and can be exercised in each case in which the exercise of this power is considered suitable. " In paragraph 6 of the detailed note appended to the said letter	 the legal position was explained thus: "It may be pointed out that the restriction introduced by section 433A does not apply to all life convicts. It applies only to those prisoners who are convicted of a capital offence i.e. an offence for which death is one of the punishments prescribed by law. Once the Indian Penal Code (Amendment) Bill becomes the law	 offenders sentenced 870 under proposed section 302(i) will not be covered by this provision as the offence will not be a capital offence. Thus in future the restriction introduced by section 433A will not be applicable to them and will	 in effect	 cover only a very small number of cases. Even in this small number of cases the restriction will not in any way curb the Constitutional power to grant remission and commutation vested in the President or the Governor by virtue of Articles 72 and 161. " There can be no doubt that by this letter it was clarified that section 433A of the Code will apply to only those convicted of a capital offence and not to all life convicts. It is equally clear that the said provision was expected to apply to exceptionally heinous offences falling within the definition of `capital offence ' once the Indian Penal Code (Amendment) Bill became law. Section 433A was	 therefore	 expected to deny premature release before completion of actual 14 years of incarceration to only those limited convicts convicted of a capital offence	 i.e.	 an exceptionally heinous crime specified in the second part of the proposed section 302	 IPC. Lastly it clarifies that section 433A cannot and does not in any way affect the constitutional power conferred on the President/Governor under ARticle 72/161 of the Constitution. It cannot	 therefore	 be denied that this letter and the accompanying note does give an impression that certain provisions of the Indian Penal Code (Amendment) Boll were interlinked with section 433A of the Code. Assuming the Criminal Procedure Code (Amendment) Bill and the Indian Penal Code (Amendment) Bill were intended to provide an integrated scheme of legislation	 can it be said that the failure on the part of the Lok Sabha to pass the letter renders the enactment of the former by which section 433A was introduced in the Code	 `a legislative fraud ' as counsel had liked to call it or to use a more familiar expression `colourable exercise of legislative power '? Counsel submitted that section 433A was got introduced on the statute book by deception	 in that	 when the former Bill was made law an impression was given that the twin legislation which had already been cleared by the Rajya Sabha on November 23	 1978 would in due course be cleared by the Lok Sabha also so that the application of section 433A would be limited to capital offences only and would have no application to a large number of `lifers '. It must be conceded that such would have been the impact if the Indian Penal Code (Amendment) Bill was passed by the Lok Sabha in the form in which the Rajya and approved it. 871 This is not a case of legislative incompetence to enact section 433A. No such submission was made. Besides the question of vires of section 433A of the Code has been determined by the Constitution Bench of this Court in Maru Ram 's case. This Court repelled all the thrusts aimed at challenging the constitutional validity of section 433A. But counsel submitted that the question was not examined from the historical perspective of the twin legislations. Counsel for the State submitted that it was not permissible for us to reopen the challenge closed by the Constitution Bench on the specious plea that a particular argument or plea was not canvassed or made before that Bench. The objection raised by counsel for the State Government is perhaps not without substance but we do not propose to deal with it because even otherwise we see no merit in the submission of the petitioner 's counsel. It is only when a legislature which has no power to legislate frames a legislation so camouflaging it as to appear to be within its competence when it knows it is not	 it can be said that the legislation so enacted is colourable legislation. In K.C. Gajapati Narayan Deo vs State of Orissa	 ; the Orissa Agricultural Income tax (Amendment) Act	 1950	 was challenged on the ground of colourable legislation or a fraud on the Constitution as its real purpose was to effect a drastic reduction in the amount of compensation payable under the Orissa Estates Abolition Act	 1952. The facts were that a Bill relating to the Orissa Abolition Act	 1952 was published in the Gazette on January 3	 1950. It provided that any sum payable for agricultural income tax for the previous year should be deducted from the gross asset of an estate for working out the net income on the basis whereof compensation payable to the estate owner could be determined. Thereafter on January 8	 1950	 a Bill to amend the Orissa Agricultural Income tax	 1947	 was introduced to enhance the highest rate of tax from 3 annas to 4 annas in a rupee and to reduce the highest slab from Rs. 30	000 to Rs. 20	000. The next Chief Minister	 however	 dropped this Bill and introduced a fresh Bill enhancing the highest rate to 12 annas 6 pies in a rupee and reducing the highest slab to rs. 15	000 only. On the same becoming law it was challenged on the ground that the real purpose of the legislation was to drastically reduce the compensation payable to the estate owners. Mukherjea	 J.	 who spoke for the Court observed as under: "It may be made clear at the outset that the doctrine of colourable legislation does not involve any question of bona fides or mala fides on the part of the legislature. The whole doctrine resolves itself into the question of competency of a particular legislature to enact a particular law. If 872 the legislature is competent to pass a particular law	 the motives which impelled it to act are really irrelevant. On the other hand	 if the legislature lacks competency	 the question of motive does not arise at all. Whether a statute is constitutional or not is thus always a question of power. " Thus the whole doctrine resolves itself into a question of competency of the concerned legislature to enact the impugned legislation. If the legislature has transgressed the limits of its powers and if such transgression is indirect	 covert or disguised	 such a legislation is described as colourable in legal parlance. The idea conveyed by the use of the said expression is that although apparently a legislature in passing the statute purported to act within the limits of its powers	 it had in substance and reality transgressed its powers	 the transgression being veiled by what appears on close scrutiny to be a mere pretence or disguise. In other words if in pith and substance the legislation does not belong to the subject falling within the limits of its power but is outside it	 the mere form of the legislation will not be determinate of the legislative competence. In Sonapur Tea Co. Ltd. vs Must. Mazirunnessa; 	 it was reiterated relying on Gajapati 's case that the doctrine of colourable legislation really postulates that legislation attempts to do indirectly what it cannot do directly. Such is not the case before us. It is no body 's contention that Parliament was not competent to amend the Criminal Procedure Code by which section 433A was inserted. Whether or not the connecting Indian Penal Code (Amendment) Bill ought to have been cleared or not was a matter left to the wisdom of the Lok Sabha. Merely because the Criminal Procedure Bill was made law and the Indian Penal Code (Amendment) Bill was passed by the Rajya Sabha did not obligate the Lok Sabha to clear it. The Lok Sabha to clear it. The Lok Sabha could have its own views on the proposed Indian Penal Code amendments. It may agree with the executive 's policy reflected in the Bill	 with or without modifications	 or not at all. Merely because in the subsequent instructions issued by the letter of July 10	 1979 and the accompanying note (Annex. II) the Joint Secretary had interlinked the two Bills	 the Lok Sabha was under no obligation to adopt the measure as such representation could not operate as estoppel against it. Even the indirect attempt on the part of the High Court of Himachal Pradesh in the ragging case to force the State Government to legislate	 State of Himachal Pradesh vs A Parent of a student of Medical College	 Simla	 [1985] 3 SCC 169 was disapproved by this Court as a matter falling	 outside the functions and duties of the judiciary. It is	 therefore	 obvious that no question of mala fides on the part of the legislature was involved in the enactment of one legislation and failure to 873 enact another. There is no question of `legislative fraud ' or `colourable legislation ' involved in the backdrop of the legislative history of section 433A of the Code as argued on behalf of the petitioner. Counsel for the Petitioner	 However	 tried to seek support form the Privy Council decision in W.R. Moram vs Deputy Commissioner of Taxation for N.S.W.	 Wherein the question to be considered was whether the legislative scheme was a colourable one forbidden by section 5(ii) of the Australian Constitution. There was no attempt to disguise the scheme as it was fully disclosed. The Privy Council	 while holding that the scheme was not a colourable legislation	 observed that `where there is admittedly a scheme of proposed legislation	 it seems to be necessary when the `pith and substance ' or `scope and effect ' of any one of the Acts is under consideration	 to treat them together and to see how they interact '. But that was a case where the scheme was carried out through enactments passed by the concerned legislatures. It is in that context that the above observations must be read and understood. In the present case also if both the Bills had become law	 counsel would perhaps have been justified in demanding that in understanding or construing one legislation or the other	 the scheme common to both must be kept in view and be permitted to interact. But where the linkage does not exist on account of the Indian Penal Code (Amendment) Bill not having become law we are unable to appreciate how section 433A can be read down to apply to only those classes of capital offences to which it would have applied had the said Bill been passed by the Lok Sabha in the terms in which it was approved by the Rajya Sabha. The language of section 433A is clear and unambiguous and does not call for extrinsic aid for its interpretation. To accept the counsel 's submission to read down or interpret section 433A of the Code with the aid of the change proposed by the Indian Penal Code (Amendment) Bill would tantamount to treating the provisions of the said Bill as forming part of the Indian Penal Code which is clearly impermissible. To put such an interpretation with the aid of such extrinsic material would result in violence to the plain language of section 433A of the Code. We are	 therefore	 unable to accept even this second limb of the contention. The law governing suspension	 remission and commutation of sentence is both statutory and constitutional. The stage for the exercise of this power generally speaking is post judicial	 i.e.	 after the judicial process has come to an end. The duty to judge and to award the appropriate punishment to the guilty is a judicial function which culminates by a judgment pronounced in accordance with law. After 874 the judicial function thus ends the executive function of giving effect to the judicial verdict commences. We first refer to the statutory provisions. Chapter III of IPC deals with punishments. The punishments to which the offenders can be liable are enumerated in section 53	 namely	 (i) death (ii) imprisonment for life (iii) imprisonment of either description	 namely	 rigorous or simple (iv) forfeiture of property and (v) fine. Section 54 empowers the appropriate government to commute the punishment of death for any other punishment. Similarly section 55 empowers the appropriate government to commute the sentence of imprisonment for life for imprisonment of either description for a term not exceeding 14 years. Chapter XXXII of the Code	 to which section 433A was added	 entitled `Execution	 Suspension	 Remission and Commutation of sentences ' contains sections 432 and 433 which have relevance; the former confers power on the appropriate government to suspend the execution of an offender 's sentence or to remit the whole or any part of the punishment to which he has been sentenced while the latter confers power on such Government to commute (a) a sentence of death for any other punishment (b) a sentence of imprisonment for life	 for imprisonment for a term not exceeding 14 years of for fine (c) a sentence of rigorus imprisonment for simple imprisonment or for fine and (d) a sentence of simple imprisonment for fine. It is in the context of the aforesaid provisions that we must read section 433A which runs as under: "433A. Restriction on powers of remission or commutation in certain cases Notwithstanding anything contained in Section 432	 where a sentence of imprisonment for life is imposed on conviction of a person for an offence for which death is one of the punishments provided by law	 or where a sentence of death imposed on a person has been commutted under section 433 into one of imprisonment for life	 such person shall not be released from prison unless he had served at least fourteen years of imprisonment. " The section begins with a non obstante clause notwithstanding anything contained in section 432 and proceeds to say that where a person is convicted for an offence for which death is one of the punishments and has been visited with the lesser sentence of imprisonment for life or where the punishment of an offender sentenced to death has been commuted under section 433 into one of imprisonment for life	 such offender will not be released unless he has served at least 14 years of imprisonment. The reason which impelled the legislature to insert this provision has been stated earlier. Therefore	 one who could have been 875 visited with the extreme punishment of death but on account of the sentencing court 's generosity was sentenced to the lesser punishment of imprisonment for life and another who actually was sentenced to death but on account of executive generosity his sentence was commutted under section 433(a) for imprisonment for life have been treated under section 433A as belonging to that class of prisoners who do not deserve to be released unless they have completed 14 years of actual incarceration. Thus the effect of section 433A is to restrict the exercise of power under sections 432 and 433 by the stipulation that the power will not be so exercised as would enable the two categories of convicts referred to in section 433A to freedom before they have completed 14 years of actual imprisonment. This is the legislative policy which is clearly discernible from the plain language of section 433A of the Code. Such prisoners constitute a single class and have	 therefore	 been subjected to the uniform requirement of suffering atleast 14 years of internment. Counsel for the petitioner next submitted that after this court 's decision in Bhagirath 's case permitting the benefit of set off under section 428 in respect of the detention period as an undertrial	 the ratio of the decision in Godse 's case must be taken as impliedly disapproved. We see no basis for this submission. In Godse 's case the convict who was sentenced to transportation for life had earned remission for 2963 days during his internment. He claimed that in view of section 57 read with section 53A	 IPC	 the total period of his incarceration could not exceed 20 years which he had completed	 inclusive of remission	 and	 therefore	 his continued detention was illegal. Section 57	 IPC reads as follows: "57. Fractions of terms of punishment In calculating fractions of terms of punishment	 imprisonment for life shall be reckoned as equivalent to imprisonment for twenty years. " The expression `imprisonment for life ' must be read in the context of section 45	 IPC. Under that provision the word `life ' denotes the life of a human being unless the contrary appears from the context. We have seen that the punishments are set out in section 53	 imprisonment for life being one of them. Read in the light of section 45 it would ordinarily mean imprisonment for the full or complete span of life. Does section 57 convey to the contrary? Dealing with this contention based on the language of section 57	 this Court observed in Godse 's case at pages 444 45 as under: 876 "Section 57 of the Indian Penal Code has no real bearing on the question raised before us. For calculating fractions of terms of punishment the section provides that transportation for life shall be regarded as equivalent to imprisonment for twenty years. It does not say that transportation for life shall be deemed to be transportation for twenty years for all purposes; nor does the amended section which substitutes the words "imprisonment for life" for "transportation for life" enable the drawing of any such all embracing fiction. A sentence of transportation for life or imprisonment for life must prima facie be treated as transportation or imprisonment for the whole of the remaining period of the convicted person 's natural life. " This interpretation of section 57 gets strengthened if we refer to sections 65	 116	 120 and 511	 of the Indian Penal Code which fix the term of imprisonment thereunder as a fraction of the maximum fixed for the principal offence. It is for the purpose of working out this fraction that it became necessary to provide that imprisonment for life shall be reckoned as equivalent to imprisonment for 20 years. If such a provision had not been made it would have been impossible to work out the fraction of an in definite term. In order to work out the fraction of terms of punishment provided in sections such as those enumerated above	 it was imperative to lay down the equivalent term for life imprisonment. The second contention urged before the Court in Godse 's case was based on the Bombay Rules governing the remission system framed in virtue of the provisions contained in the . This Court pointed out that the did not confer on any authority a power to commute or remit sentences. The Remission Rules made thereunder had	 therefore	 to be confined to the scope and ambit of that statute and could not be extended to other statutes. Under the Bombay Rules three types of remissions for good conduct were allowed and for working them out transportation for life was equated to 15 years of actual imprisonment. Dealing with Godse 's plea for premature release on the strength of these rules this Court observed at page 447 as under: "The rules framed under the enable such a person to remission ordinary	 special and State and the said remissions will be given credit towards his term of imprisonment. For the purpose of working out the remis 877 sions the sentence of transportation for life is ordinarily equated with a definite period	 but it is only for that particular purpose and not for any other purpose. As the sentence of transportation for life or its prison equivalent the life imprisonment is one of indefinite duration	 the remissions so earned do not in practice help such a convict as it is not possible to predicate the time of his death. That is why the rules provide for a procedure to enable an appropriate Government to remit the sentence under section 401 (now section 432) of the Code of Criminal Procedure on a consideration of the relevant factors including the period of remissions earned. The question of remission is exclusively within province of the appropriate Government; and in this case it is admitted that though the appropriate Government made certain remissions under section 401 of the Code of Criminal Procedure	 it did not remit the entire sentence. " On this line of reasoning the submission of counsel that if the Court were to take the view that transportation for life or imprisonment for life enures till the last breath of the convict passes out	 the entire scheme of remissions framed under the or any like statute and the whole exercise of crediting remissions to the account of the convict would collapse	 was spurned. This Court came to the conclusion that the Remission Rules have a limited scope and in the case of a convict undergoing sentence of transportation for life or imprisonment for life it acquires significance only if the sentence is commuted or remitted	 subject to section 433A of the Code or in exercise of constitutional power under Articles 72/161. In Maru Ram 's case the Constitution Bench reaffirmed the ratio of Godse 's case and held that the nature of a life sentence is incarceration until death; judicial sentence for imprisonment for life cannot be in jeopardy merely because of long accumulation of remissions. Release would follow only upon an order under section 401 of the Criminal Procedure Code	 1898 by the appropriate Government or on a clemency order in exercise of power under Articles 72/161 of the Constitution. At page 1220 the Constitution Bench expressed itself thus: "Ordinary where a sentence is for a definite term	 the calculus of remissions may benefit the prisoner to instant release at that point where the substraction result is zero. 878 Here	 we are concerned with life imprisonment and so we come upon another concept bearing on the nature of sentence which has been highlighted in Godse 's case. Where the sentence is indeterminate or of uncertain duration	 the result of substraction from an uncertain quantity is still an uncertain quantity and release of the prisoner cannot follow except on some fiction of quantification of a sentence of uncertain duration. " Referring to the facts of Godse 's case and affirming the view that the sentence of imprisonment for life enures upto the last breath of the convict	 this Court proceeded to estate as under: "Since death was uncertain	 deduction by way of remission did not yield any tangible date for release and so the prayer of Godse was refused. The nature of a life sentence is incarceration until death	 judicial sentence of imprisonment for life cannot be in jeopardy merely because of the long accumulation of remissions. " It is	 therefore	 clear from the aforesaid observations that unless the sentence for life imprisonment is commuted or remitted as stated earlier by the appropriate authority under the provisions of the relevant law	 a convict is bound in law to serve the entire life term in prison; the rules framed under the or like statute may enable such a convict to earn remissions but such remissions will not entitle him to release before he has completed 14 years of incarceration in view of section 433A of the Code unless of course power has been exercised under Article 7/161 of the Constitution. It will thus be seen from the ratio laid down in the aforesaid two cases that where a person has been sentenced to imprisonment for life the remissions earned by him during his internment in prison under the relevant remission rules have a limited scope and must be confined to the scope and ambit of the said rules and do not acquire significance until the sentence is remitted under section 432	 in which case the remission would be subject to limitation of section 433A of the Code	 or constitutional power has been exercised under Article 72/161 of the Constitution. In Bhagirath 's case the question which the Constitution Bench was required to consider was whether a person sentenced to imprisonment for life can claim the benefit of section 428 of the Code which	 inter alia provides for setting off the period of detention undergone by the accused as an undertrial against the sentence of 879 imprisonment ultimately awarded to him. Referring to section 57	 IPC	 the Constitution Bench reiterated the legal position as under: "The provision contained in Section 57 that imprisonment for life has to be reckoned as equivalent to imprisonment for 20 years is for the purpose of calculating fractions of terms in punishment. We cannot press that provision into service for a wider purpose. " These observations are consistent with the ratio laid down in Godse and Maru Ram 's cases. Coming next to the question of set off under section 428 of the Code	 this Court held: "The question of setting off the period of detention undergone by an accused as an undertrial prisoner against the sentence of life imprisonment can arise only if an order is passed by the appropriate authority under section 432 of section 433 of the Code. In the absence or such order	 passed generally or specially	 and apart from the provisions	 if any of the relevant Jail Manual	 imprisonment for life would mean	 according to the rule in Gopal Vinayak Godse	 imprisonment for the remainder of life. " We fail to see any departure from the ratio of Godse 's case; on the contrary the afore quoted passage clearly shows approval of that ratio and this becomes further clear from the final order passed by the Court while allowing the appeal/writ petition. The Court directed that the period of detention undergone by the two accused as undertrial prisoners would be set off against the sentence of life imprisonment imposed upon them	 subject to the provisions contained in section 433A and	 `provided that orders have been passed by the appropriate authority under section 433 of the Code of Criminal Procedure '. These directions make it clear beyond any manner of doubt that just as in the case of remissions so also in the case of set off the period of detention as undertrial would enure to the benefit of the convict provided the appropriate Government has chosen to pass an order under sections 432/433 of the Code. The ratio of Bhagirath 's case	 therefore	 does not run counter to the ratio of this Court in the case of Godse or Maru Ram. Under the Constitutional Scheme the President is the Chief Executive of the Union of India in whom the executive power of the Union vests. Similarly	 the Governor is the Chief Executive of the 880 concerned State and in him vests the executive power of that State. Articles 72 and 161 confer the clemency power of pardon	 etc.	 on the President and the State Governors	 respectively. Needless to say that this constitutional power would override the statutory power contained in sections 432 and 433 and the limitation of section 433A of the Code as well as the power conferred by sections 54 and 55	 IPC. No doubt	 this power has to be exercised by the President/Governor on the advice of his Council of Ministers. How this power can be exercised consistently with Article 14 of the Constitution was one of the Questions which this Court was invited to decide in Maru Ram 's case. In order that there may not be allegations of arbitrary exercise of this power this Court observed at pages 1243 44 as under: "The proper thing to do	 if Government is to keep faith with the founding fathers	 is to make rules for its own guidance in the exercise of the pardon power keeping	 ofcourse	 a large residuary power to meet special situations or sudden developments. This will exclude the vice of discrimination such as may arise where two persons have been convicted and sentenced in the same case for the same degree of guilt but one is released and the other refused	 for such irrelevant reasons as religion	 caste	 color or political loyalty. " Till such rules are framed this Court thought that extant remission rules framed under the or under any other similar legislation by the State Governments may provide effective guidelines of a recommendatory nature helpful to the Government to release the prisoner by remitting the remaining term. It was	 therefore	 suggested that the said rules and remission schemes be continued and benefit thereof be extended to all those who come within their purview. At the same time the Court was aware that special cases may require different considerations and `the wide power of executive clemency cannot be bound down even by self created rules '. Summing up its findings in paragraph 10 at page 1249	 this Court observed: "We regard it as fair that until fresh rules are made in keeping with the experience gathered	 current social conditions and accepted penological thinking a desirable step	 in our view the present remissions and release schemes may usefully be taken as guidelines under ARticles 72/161 and orders for release passed. We cannot fault the Government	 if in some intractably savage delinquents	 section 881 433A is itself treated as a guideline for exercise of Articles 72/161. These observations of ours are recommendatory to avoid a hiatus	 but it is for Government	 Central or State	 to decide whether and why the current Remission Rules should not survive until replaced by a more wholesome scheme. " It will be obvious from the above that the observations were purely recommendatory in nature. In Kehar Singh 's case on the question of laying down guidelines for the exercise of power under Article 72 of the Constitution this Court observed in paragraph 16 as under: "It seems to us that there is sufficient indication in the terms of Article 72 and in the history of the power enshrined in that provision as well as existing case law	 and specific guidelines need not be spelled out. Indeed	 it may not be possible to lay down any precise	 clearly defined and sufficiently channelised guidelines	 for we must remember that the power under Article 72 is of the widest amplitude	 can contemplate a myriad kind of and categories of cases with facts and situations varying from case to case	 in which the merits and reasons of State may be profoundly assisted by prevailing occasion and passing time. And it is of great significance that the function itself enjoys high status in the constitutional scheme. " These observations do indicate that the Constitution Bench which decided Kehar Singh 's case was of the view that the language of Article 72 itself provided sufficient guidelines for the exercise of power and having regard to its wide amplitude and the status of the function to be discharged thereunder	 it was perhaps unnecessary to spell out specific guidelines since such guidelines may not be able to conceive of all myraid kinds and categories of cases which may come up for the exercise of such power. No doubt in Maru Ram 's case the Constitution Bench did recommend the framing of guidelines for the exercise of power under Articles 72/161 of the Constitution. But that was a mere recommendation and not a ratio decidendi having a binding effect on the Constitution Bench which decided Kehar Singh 's case. Therefore	 the observation made by the Constitution Bench in Kehar Singh 's case does not upturn any ratio laid down in Maru Ram 's case. Nor has the Bench in Kehar Singh 's case said anything with regard to using the 882 provisions of extent Remission Rules as guidelines for the exercise of the clemency powers. It is true that Articles 72/161 make use of two expressions `remissions ' with regard to punishment and `remit ' in relation to sentence but we do not think it proper to express any opinion as to the content and amplitude of these two expressions in the abstract in the absence of a fact situation. We	 therefore	 express no opinion on this question formulated by the learned counsel for the petitioner. Lastly the learned counsel for the petitioner raised a hypothetical question whether it was permissible in law to grant conditional premature release to a life convict even before completion of 14 years of actual imprisonment	 which release would tantamount to the prisoner serving time for the purpose of section 433A of the Code? It is difficult and indeed not advisable to answer such a hypothetical question without being fully aware of the nature of conditions imposed for release. We can do no better than quote the following observations made at page 1247 in Maru Ram 's case: ". . the expression `prison ' and `imprisonment ' must receive a wider connotation and include any place notified as such for detention purposes. `Stone walls and iron bars do not a prison make ': nor are `stone walls and iron bars ' a sine qua non to make a jail. Open jails are capital instances. any life under the control of the State whether within high walled or not may be a prison if the law regards it as such. House detentions	 for example	 Palaces	 where Gandhiji was detained were prisons. Restraint on freedom under the prison law is the test. Licencsed where instant re capture is sanctioned by the law and likewise parole	 where the parole is not free agent	 and other categories under the invisible fetters of the prison law may legitimately be regarded as imprisonment. This point is necessary to be cleared even for computation of 14 years under section 433A. Therefore	 in each case	 the question whether the grant of conditional premature release answers the test laid down by this Court in the afore quoted passage	 would depend on the nature of the conditions imposed and the circumstances in which the order is passed and is to be executed. No general observation can be made and we make none. 883 In paragraph 10 of the memorandum of the Writ petition. 	 three reasons have been assigned for invoking this Court 's jurisdiction under Article 32 of the Constitution	 viz.	 (i) the questions involved in this petition will affect the right of a large body of life convicts seeking premature release; (ii) this Court 's judgment in Bhagirath 's case deviated from the ratio laid down in Godse 's case and	 therefore	 the entire law of remissions needed a review; and (iii) the High Court of Rajasthan had refused to examine the merits of the various important questions of law raised before it. It is on account of the fact that this petition was in the nature of a representative petition touching the rights of a large number of convicts of the categories referred to in section 433A of the Code	 that we have dealt with the various questions of law in extenso. Otherwise the petition could have been disposed of on the narrow ground that even though in view of sections 433A of the Code	 premature release could not be ordered under sections 432/433 of the Code read with the 1958 Rules until the petitioner had completed 14 years of actual imprisonment	 his release could be considered in exercise of powers under Articles 72/161 of the Constitution treating the 1958 Rules guidelines	 if necessary. The relief claimed in the petition is two fold	 namely	 (a) to grant a mandamus to the appropriate Government for the premature release of the petitioner by exercising constitutional power with the aid of 1958 Rules and (b) to declare the petitioner 's continued detention as illegal and void. The petitioner has not completed 14 years of actual incarceration and as such he cannot invoke sections 432 and 433 of the Code. His continued detention is consistent with section 433A of the Code and there is nothing on record to show that it is otherwise illegal and void. The outcome of his clemency application under the constitution is not put in issue in the present proceedings if it has been rejected and if the same is pending despite the directive of the High Court it would be open to the petitioner to approach the High Court for the compliance of its order. Under the circumstance no mandamus can issue. The writ petition must	 therefore	 fail. It is hereby dismissed. Rule discharged. G.N. Petition dismissed.

The petitioner was convicted for murder and sentenced to life imprisonment	 which was confirmed by the High Court. Later he filed a Writ Petition before the High Court for premature release on the plea that he was entitled to be considered for release under the Rajasthan Prisons (Shortening of Sentences) Rules	 1958 notwithstanding the insertion of Section 433A in the Code of Criminal Procedure	 1973 with effect from 18.12.1978	 just two days before his conviction. It was contended that Section 433A Cr. P.C. which places an embargo of 14 years imprisonment before premature release could not curtail the constitutional power vested in the Governor by virtue of Article 161 of the Constitution. The High Court	 dismissed the Writ Petition on the ground that the petitioner 's representations to the Government and State Home Minister were pending consideration. However	 the High Court directed that the two representations of the petitioner should be disposed of within one month. Unable to secure his release from the High Court as also from the State Government	 the petitioner filed the present Write Petition before this Court	 contending that the insertion of Section 433A in the Code of Criminal Procedure was invalid; that in the absence of guidelines under articles 72/161 of Constitution	 Section 433A Cr. P.C. could not apply to life convicts; that the Rajasthan Prisons (Shortening of Sentences) Rules	 1958 would prevail over Section 433A Cr. P.C.	 and that the constitutional guarantee under Articles 14 and 21 was violated. Dismissing the Writ Petition	 this Court HELD: 1.1. It is only when a legislature which has no power to legislate frames a legislation so camouflaging it as to appear to be within its competence when it knows it is not	 it can be said that the legislation so enacted is colourable legislation. If in pith and substance the legislation does not belong to the subject falling within the limits of its power but is outside it	 the mere form of the legislation will not be determinate of the legislative competence. [871C; 872C] 1.2. It is not a case of legislative incompetence to enact section 433A. No such contention was raised. Besides the question of vires of section 433A of the Code has been determined by the Constitution Bench of this Court in Maru Ram 's case. This Court Repelled all the thrusts aimed at challenging the constitutional validity of section 433A. [871A] 860 1.3. It is no body 's contention that Parliament was not competent to amend the Criminal Procedure Code by which section 433A was inserted. Whether or not the connecting Indian Penal Code (Amendment) Bill ought to have cleared or not was matter left to the wisdom of the Lok Sabha. Merely because the Criminal Procedure Bill was made law and the Indian Penal Code (Amendment) Bill was passed by the Rajya Sabha did not obligate the Lok Sabha to clear it. The Lok Sabha could have its own views on the proposed Indian Penal Code amendments. It may agree with the executive 's policy reflected in the Bill	 with or without modifications	 or not at all. Merely because in the subsequent instructions issued by the letter of July 10	 1979 and the accompanying note	 the Joint Secretary had interlinked the two Bills	 the Lok Sabha was under no obligation to adopt the measure as such representation could not operate as estoppel against it. It is obvious that no question of mala fides on the part of the legislature was involved in the enactment of one legislation and failure to enact another. There is no question of `legislative fraud ' or `colourbale legislation ' involved in the backdrop of the legislative history of section 433A of the Code of Criminal Procedure. [872D H; 873A] 1.4. In the present case if both the Bills had become law	 then in understanding or construing one legislation or the other	 the scheme common to both would be kept in view and be permitted to interact. But where the linkage does not exist on account of the Indian Penal Code (Amendment) Bill not having become law	 section 433A cannot be read down to apply to only those classes of capital offences to which it would have applied had the said Bill been passed by the Lok Sabha in the terms in which it was approved by the Rajya Sabha. The language of section 433A is clear and unambiguous and does not call for extrinsic aid for its interpretation. To read down or interpret section 433A of the Code with the aid of the changes proposed by the Indian Penal Code (Amendment) Bill would tantamount to treating the said Bills forming part of the Indian Penal Code	 which is clearly impermissible. To put such an interpretation with the aid of such extrinsic material would result in violence to the plain language of section 433A of the Code. [873D F] Maru Ram vs Union of India	 ; 	 followed. K.C. Gajapati Narayan Deo vs State of Orissa	 ; and Sonapur Tea Co. Ltd. vs Must Mariruznessa	 ; 	 relied on. 861 State of Himachal Pradesh vs A Parent of a student of Medical College	 Simla	 [1985] 3 SCC 169 and W.R. Moram vs Deputy Commissioner of Taxation for N.S.W.	 	 referred to. The law governing suspension	 remission and commutation of sentence is both statutory and constitutional. The stage for the exercise of this power generally speaking is post judicial	 i.e.	 after the judicial process has come to an end. The duty to judge and to award appropriate punishment to the guilty is a judicial function which culminates by a judgment pronounced in accordance with law. After the judicial function thus ends the executive function of giving effect to the judicial verdict commences. [873G H; 874A] 2.2. One who could have been visited with the extreme punishment of death but on account of the sentencing court 's generosity was sentenced to the lesser punishment of imprisonment for life and another who actually was sentenced to death but on account of executive generosity his sentence was commuted under section 433(a) for imprisonment for life have been treated under section 433A as belonging to that class of prisoners who do not deserve to be released unless they have completed 14 Years of actual incarceration. Thus	 the effect of section 433A is to restrict the exercise of power under sections 432 and 433 by the stipulation that the power will not be so exercised as would enable the two categories of convicts referred to in section 433A to freedom before they have completed 14 years of actual imprisonment. This is the legislative policy which is clearly discernible from the plain language of section 433A of the Code. Such prisoners constitute a single class and have	 therefore	 been subjected to the uniform requirement of suffering atleast 14 years of internment. [874G H; 875A C] 3. The expression `life imprisonment ' must be read in the context of section 45 IPC. Read so	 it would ordinarily mean imprisonment for the full or complete span of life. Section 65	 116	 120 and 511 of the Indian Penal Code fix the term of imprisonment thereunder as a fraction of the maximum fixed for the principal offence. It is for the purpose of working out this fraction that it became necessary to provide under section 57 that imprisonment for life shall be reckoned as equivalent to imprisonment for 20 years. If such a provision had not been made it would have been impossible to work out the fraction of an indefinite term. In order to work out the fraction of terms of punishment provided in the above sections it was imperative to lay down the equivalent term for life imprisonment. [875G; 876C E] 862 Gopal Goads vs State of Maharashtra	 ; ; affirmed. 4.1 Unless the sentence for life imprisonment is commuted or remitted by the appropriate authority under the provisions of the relevant law	 a convict is bound in law to serve the entire life term in prison; the rules framed under the Prisons Act or life statute may enable such a convict to earn remissions but such remissions will not entitle him to release before he has completed 14 years of incarceration in view of section 433A of the Code unless of course power has been exercised under Article 72/161 of the Constitution. Where a person has been sentenced to imprisonment for life the remissions earned by him during his internment in prison under the relevant remission rules have a limited scope and must be confined to the scope and ambit of the said rules and do not acquire significance until the sentence is remitted under section 432	 in which case the remission would be subject to limitation of section 433A of the Code	 or constitutional power has been exercised under Articles 72/161 of the Constitution. [878D E] 4.2. Articles 72 and 161 confer the clemency power of pardon	 etc.	 on the President and the State Governors	 respectively. This constitutional power would override the statutory power contained in sections 432 and 433 and the limitation of section 433A of the Code as well as the power conferred by sections 54 and 55 IPC. No doubt	 this power has to be exercised by the President/Governor on the advice of his Council of Ministers. [880A B] 4.3. Though in Maru Ram 's case	 this Court recommended the framing of guidelines for the exercise of power under Articles 72/161 of the Constitution of India	 it had no binding effect on the Constitution Bench which decided Kehar Singh 's case. Nor has this Court said anything in Kehar Singh 's case with regard to using the provisions of extent Remission Rules as guidelines for the exercise of clemency powers. [881H; 882A] Maru Ram vs Union of India	 ; ; Kehar Singh vs Union of India	 ; ; Bhagirath vs Delhi Administration; 	 and Gopal Godse vs State of Maharashtra; 	 	 affirmed. It is true that Articles 72/161 make use of two expressions `remissions ' with regard to punishment and `remit ' in relation to sentence but it is not proper to express any opinion as to the content and amplitude of these two expressions in the abstract	 in the absence of a fact situation. [882B] 863 6.1 The hypothetical question whether it was permissible in law to grant conditional premature release to a life convict even before completion of 14 years of actual imprisonment	 which release would tantamount to the prisoner serving time for the purpose of section 433A Cr. P.C.	 need not be answered without being fully aware of the conditions imposed for release. In each case	 the question whether the grant of conditional premature release answers the test laid down by this Court in Maru Ram 's case	 would depend on the nature of the conditions imposed and the circumstances in which the order is passed and is to be executed. No general observation can be made. [882C H] Maru Ram vs Union of India	 ; ; referred to. In the instant case	 petitioner has not completed 14 years of actual incarceration and as such he cannot invoke sections 43 and 433 of the Code of Criminal Procedure. His continued detention is consistent with section 433A of the Code and there is nothing on record to show that it is otherwise illegal and void. The outcome of his clemency application under the Constitution is not put in issue in the present proceedings if it has been rejected	 and if the same is pending despite the directive of the High Court it would be open to the petitioner to approach the High Court for the compliance of its order. [883E F]