Summarize the following court judgment. ivil Appeal Nos. 415 and 962 of 1976. (Appeals by Special Leave from the Judgment and Orders dated 2 3 1976 and 21 7 1976 of the Punjab & Haryana High Court in Civil Writ Petition Nos. 561 and 1961 of 1976 respectively). S.T. Desai	 Talat Ansari and Shri Narain for J.B. Dadac hanji	 for the Appellants (in both appeals). 718 M.C. Bhandare and R.N. Sachthey	 for the Respondents (in both appeals). The Judgment of the Court was delivered by UNTWALIA	 J. In these two appeals by special leave a common question of law falls for our determination	 hence	 they have been heard together and are being disposed of by this judgment. The Indian Aluminium Cables Ltd.	 appellant No. 1 in both the appeals has got its factory at Faridabad in the State of Haryana. It sells and supplies aluminium cables to several State Electricity Undertakings or Boards situated in the various States. In respect of the assessment year 1962 63	 the Company raised a dispute that it was not liable to pay Central Sales Tax under the 	 as it claimed to be exempt from inter State tax on the sales of its products to the various State Undertakings or Boards by reason of the provisions contained in section 5 (2)(a)(iv) of the Punjab General Sales Tax Act	 1948 hereinafter referred to as the Act. The Tribunal decided the matter in favour of the assessee Company but the High Court of Punjab and Haryana answered the Sales Tax Reference made at the instance of the Revenue against the assessee. The decision of the High Court is reported in The State vs Indian Aluminium Cable Ltd.	 Faridabad(1). The matter was brought to this Court in appeal and by a decision given on April 2	 1976 the view of the High Court was af firmed and it was held that the sales were not exempt from tax generally within the meaning of section 8(2A) of the Central Act read with section 5(2)(a)(iv) of the Punjab Act. The decision of this Court is reported in Indian Aluminium Cables Ltd. and another vs State of Haryana(2). The period of assessment concerning the appellant is each quarter of the year. In respect of.all the 8 quarters of the years 1969 70 and. 1970 71	 Returns were filed by the Company in time	 i.e. on or before the last day of the month following the quarter concerned. The Assessing Authority did not accept the Returns and issued notices on May 22	 1970 under section 11 (2) of the Act in respect of the 4 quarters of 1969 70 requiring the assessee Company to pro duce evidence in support of the Returns. Since the ques tion of assessee 's liability to pay Central Sales Tax was pending in reference before the High Court the matter was not pursued by the Assessing Authority and as per the re quest of the asses.see it was kept pending. Even though the High Court decision was given on November 5	 1973	 the matter became subjudice in appeal filed in this Court. It appears that the matter of assessment in respect of the year 1969 70 was taken up by the Assessing Authority again by issuance of a notice on September 15	 1975. Thereupon	 the Company filed Civil Writ Petition No. 561/1976 in the High Court on January 27	 1976 to quash the notice dated Septem ber 15	 1975 and to re.strain the State. of Haryana and its Officer the Excise and Taxation Officer	 Faridabad	 from proceeding with the assessment. It is said that in respect of the 4 quarters of the (2) 38 S.T.C. 108. 719 year 1970 71 notices under section 11(2) of the Act were issued for the first time by the assessing authority on January 30	 1976. Thereupon	 the Company filed in the High Court Civil Writ Petition No. 1961/1976 for reliefs simi lar to the ones asked for in the other writ petition. According to the appellant	 in the first writ petition were raised before the High Court the two main questions in the following terms: "(i) Whether the assessment proceedings with regard to assessment year 1969 70 could be proceed ed with and whether assessment order could be passed beyond a period of 5 years after the expiry of the period to which the assessment relates. In other words	 whether the Sales Tax Officer had jurisdiction to make assessment for the assessment year 1969 70 which had become time barred; (ii) Whether Central Sales Tax was payable in respect of sale of electric cables manufactured and sold by the petitioner Company to State Electricity Boards in view of the exemption granted generally under section 8(2A) of the read with section 5 (2) (a) (iv) of the Punjab General Sales Tax Act	 1948". This writ petition was dismissed in limine by a Bench of the High Court stating "Reply has been filed. The matter is covered in favour of the respondent by 33 STC 152. Dismissed". It appears by the time the second writ petition came to be filed the appellant 's liability to pay Central Sales Tax was decided by this Court in the case referred to above. Therefore	 in the second writ petition	 in the main	 the question raised was one of limitation as in the other writ petition. Another Bench of the High Court dismissed this writ petition in limine on July 21	 1976. In substance and in effect	 in spite of the Full Bench decision (by the majority) of the High Court in the case of Rameshwar Lal Sarup Chand vs Shri U.S. Naurath	 Excise & Taxation Officer	 Assessing Authority	 Amritsar and Another(1)	 on which Mr. S.T. Desai	 learned counsel for the appellant heavily relied upon before us	 neither Bench found any substance in the point of limitation raised by the Company and dismissed the two writ petitions in limine. In our opinion the High Court was right	 for the reasons to be stated hereinafter in this judgment	 in not entertaining the point of limitation in spite of the full Bench decision aforesaid	 as	 the said decision in view of many pronouncements of this Court to be alluded to hereinafter is no longer good law. In face of the decision of this Court in Indian Alumini um Cables Ltd. & Anr. vs State of Haryana (supra) the ques tion of the appellant 's tax liability under the was not reagitated before (1) 15 S.T.C. 932. 720 US. Learned counsel for the appellant	 however	 strenuously urged that the assessing authority could not assess the tax payable by the appellant on expiry of the period of 5 years from the end of each quarter. The 4th quarter of the year 1969 70 expired on March 31	 1970 and the period of 5 years having expired on March 31	 1975 no assessment could be made thereafter. In relation to the year 1970 71 even the notice for the first time was issued under section 11 (2) of the Act after the expiry of the period of 5 years in relation to the first three quarters	 although it was within time apropos the last quarter. The period of the last quar ter expired on March 31	 1971; but no assessment could be made	 according to the appellant 's counsel	 even in regard to the assessment year 1970 71 in respect of any quarter on the expiry of the 5 years ' period reckoning from the last date of the quarter. Mr. M.C. Bhandare	 learned counsel for the respondents submitted that although a time limit had been ' fixed in sub sections (4)	 (5) 	and (6) of section 11 of the Act	 no time limit was fixed by the Legis lature for actions and orders to be taken and passed under sub ' sections ( 1 )	 ( 2 ) and ( 3 ). Counsel	 therefore	 urged that neither the issuance of any notice under section 11 (2) of the Act was beyond any period of time nor was the assessing authority under any disability of any period of limitation in passing the final order of assessment in respect of any of the quarters in question. The alternative submission of Mr. Desai that in any view of the matter notice had to be issued under section 11 (2) and assessments had to be completed under section 11 (3) within a reasonable time was also refuted by Mr. Bhandare. It is beyond any dispute and debate that under section 10 of the Act read along with the Rules framed thereunder	 Return has to be filed by a dealer for each quarter by the last day of the following month of the quarter and admitted sales tax as per the Return has also got to 'be deposited and challan filed along with the Return. It will be seen hereinafter from the authoritative pronouncements of this Court that the mere statutory liability of a dealer to file the Return or to pay the tax has not the effect of commence ment of any proceeding under the Act. If a dealer does not file a Return being liable to pay tax	 then action under sub section (5) or sub section (6)	 as the case may be	 has to be taken by the Assessing Authority within the period of 5 years prescribed therein. The expression "proceed to assess" in those two sub sections as also in sub section (4) means taking some effective step towards proceeding to make the best judgment assessment in accordance with the sub section which may be applicable. In a given case action may be taken under section 11 A (1 ) of the Act treating the case as a case of escaped assessment within the meaning of said section. But the assessing authority has got to. pro ceed to assess or reassess within 5 years following the close of the year for which the turnover is proposed to be assessed or reassessed. But in a case where the assessee has filed the Return the proceeding under the Act commences on the filing of the Return. "If the Assessing Authority is satisfied without requiring the presence of dealer or the production by him of any evidence that the returns furnished in respect of any period are correct and complete	 he shall assess the amount of tax due from the dealer on the basis of such returns" as provided for in section 11 (1 ). The assessment under sub section(1) can be made at any time even 721 according to the Full Bench decision of the Bombay High Court in Bisesar House vs State of Bombay and Others(1)	 followed in Rameshwar Lal Sarup Chand(3). But the view of the Bombay High Court on a consideration of the similar provisions of the other State Statutes that a notice under sub section (2) must be issued within the period of limita tion mentioned in other sub sections of section 11 or sec tion 11 A no longer holds good. A notice under sub section (2) requiring the dealer to produce evidence can be issued at any time after the filing of the Return. The expectancy of taking steps without any undue delay and within a reasonable time is an expectancy of prudence. But legally the action cannot be nullified merely on the ground of delay in the issuance of the notice under section 11 (2). Sub section (3) of section 11 says : "On the day specified in the notice or as soon afterwards as may be	 the Assessing Authority shall	 after hearing such evidence as the dealer may produce	 and such other evidence as the Assess ing Authority may require on specified points	 assess the amount of tax due from the dealer". On a correct interpretation of the provision afore said what emerges as follows : (i) That the Assessing Authority shall hear the evidence produced by the dealer on the day speci fied in the notice issued under sub section (2). (ii) It can adjourn the hearing to some other day and hear the evidence produced by the dealer on the adjourned day or days. (iii) The Assessing Authority may require the dealer to produce further evidence on specified points on the adjourned day or days. (iv) The Assessing Authority should assess the amount of tax due from the dealer	 that is to say	 pass the order of assessment	 on the day on which the. hearing 	of the evidence is completed or "as soon afterwards as may be". "the last phrase is absent in some of the similar statutes. It	 therefor may be open to argument whether the assessment order passed under section 11(3) of the Act after undue delay of the comple tion of the hearing of the evidence produced or required to be produced by the dealer is valid or not. But we are not concerned with the said ques tion in this case as on the facts and in the cir cumstances appearing relation to the assessment proceedings of either of the two years to produc tion of evidence by the assessee could not and has not start as yet because of the filing of the writ petitions and the appeals in the Court. It goes without saying that the assessing authority will be well advised to complete the assessment proceedings in question as soon as it may be possible to do so after the delivery of this judgment. (1) 9 S.T.C. 654. (2) 15 S.T.C	 932. 722 Sub section (4) of section 11 is attracted in a case where a dealer having furnished a Return in respect of a period fails to comply with the terms of a notice issued under sub section (2). In such a case the Assessing Authority has to take some effective step	 such as issuance of a notice to the assessee intimating to him that he is proceeding to assess to the best of his judgment the amount of tax due from the dealer. On failure of a dealer to furnish a Return in respect of any period by the prescribed date the Assessing Authority after giving the dealer a reasonable opportunity of being heard can proceed to assess to the best of his judgment the amount of tax	 if any	 due from the dealer. In such a case also an effective Step such as issuance of a notice to the dealer concerned showing that the Assessing. Authority is proceeding to assess has got to be taken within 5 years of the expiry of the period concerned. Sub section (6) is attracted in the case of a dealer who being liable to pay tax under the Act has failed to apply for registration. Similar steps as the ones to be taken under subsection (5)	are to be taken under sub section (6) within a period of 5 years after the expiry of the concerned period. But the Legis lature advisedly did not fix any period of limita tion for taking up of the steps or the passing of the assessment order under any of the sub sections (1)	 (2) or (3). The reason is obvious. Best judgment assessments in the circumstances mentioned in any of the sub sections (4)	 (5) or (6) could not be allowed to be made after the expiry of a certain reasonable time which the Legislature thought was three years previously but made it five years by Punjab Act 28 of 1965. But where a regis tered dealer has filed the Return the assessing authority can pass the assessment order under sub section (1 ) and accept the Return filed by the dealer as correct and complete. In such a case the formality of passing an order of assessment is to be completed without any further demand of tax from the dealer. For the issuance of a notice under subsection (2) no time limit has been fixed	 but the assessing authority must remain on its guard of taking the steps and completing the assessment as soon as it may be possible to do so. Other wise	 the risk involved may just be pointed out. Take a case where a notice under sub section (2) is issued after the expiry or just on the verge of expiry of the period of 5 years and the dealer fails to comply with the terms of the notice. In such a case the assessing authority may have to proceed to make the best judgment assessment under sub section (4) attracting the bar of limitation of 5 years. But	 of course	 there may be a case where in spite of the failure of the dealer to comply with the terms of a notice issued under sub section (2) the assessing authority may be in a position to complete the assessment under sub section (3)	 treating the alleged failure of the dealer as not a real failure on his part. We now proceed to discuss some of the relevant decisions on the points at issue. In Bisesar House case (supra)	 Chagla	 C.J. delivering the judgment of a Full Bench of the Bombay High Court on a consideration of the similar provisions of section 11 of the C.P. and Berar Sales Tax Act	 1947 applied the ratio of his decision in Commissioner of Income tax	 Bombay City vs Natsee Nagsee & Co.(1)	 to a case covered by (1) 723 section 11 (2) of the Sales Tax Act. With respect to the learned Chief Justice we say that he was not right when he said at page 669: "Section 11 (2) is in the substantial sense an initiation of fresh proceedings by the Commission er. It is open to the Commissioner to be satisfied with what the assessee has done and pass an order under section 11 (1). But if he is not satisfied	 then he initiates fresh proceedings under section 11(2) by issuing a notice. That undoubtedly is putting the assessee to the peril of the apprehension that as a result of the notice his tax might be enhanced. If the principle we have laid down in Narsee Nagsee 's case 31 I.T.R. 164 is correct	 then that princi ple would undoubtedly apply to the issuing of a notice under section 11(2)". As held by this Court in the case of Ghanshyamdas vs Regional Assistant Commissioner of Sales Tax	 Nagpur & others(1)	 even the filing of a Return by a dealer is tantamount to initiation or commencement of a proceeding under the Sales Tax Act. The decision of the Bombay High Court in Narsee Nagsee 's case Was affirmed by a Division Bench (by majority) of this Court in Commissioner of Income tax	 Bombay City Iv. Narsee Nagsee & Co. (2). Subba Rao	 J. as he then was	 delivering the majority opinion of a Constitution Bench of this Court in Ghanshyam das 's case (supra) referring to the decision of the Privy Council in Rajendranath Mukherjee vs Income tax Commission er(1)	 said at page 983 of 14 S.T.C. "This decision is a clear authority for the position that if a return was duly made	 the assessment could be made at any time unless the statute prescribed a time limit. This can only be for the reason that the proceedings duly initiated in time will be pending and can	 therefore	 be completed without time limit". At page 987 says the learned Judge: "It is manifest that in the case of a registered dealer the proceedings before the Commissioner start factually when a return is made or when a notice is issued to him either under section 10(3) or under section 11(2) of the Act". As rightly point ed out by Shah	 J. as he then was	 at page 436	 if we may say so with respect	 in the case of Regional Assistant Commissioner of Sales Tax	 Indore vs Malwa Vanaspati and Chemical Co. Ltd.(4)	 section 11 (2) is a typographical error in the sentence extracted above. In disapproval of the view of the Full Bench expressed in Bisesar House case (supra) it was reiterated at page 989 in Ghanshyamdas 's case "AS we have held that the submission of a statutory return would initiate the proceedings and that the proceedings would be pending till a final order of assessment was made on the said return	 no question of limitation would arise . . . For the foregoing reason we hold that a statutory obligation to make a return within a prescribed time does not proprio vigore initiate the assessment proceedings before the Commissioner; but the proceedings would commence after the return was submitted and would continue till a final order of assessment was made in regard to the said return". (1) 14 S.T.C. 976 . (2) (3) (4) 21 S.T.C. 431. 724 In Narsee Nagsee 's case (supra) it has been pointed out by the majority of the Bench that a notice under section 11(1) of the Business Profits Tax Act	 1947 "must be given within the financial year which commences next after the expiry of the accounting period or the previous year which is by itself or includes the chargeable accounting period in question". (vide page 317 of 40 I.T.R.). It was also pointed out in that case that the words "profits escaping assessment" ' in section 14 of the Business Profits Tax Act applied equally to cases where notice had been given but had resulted in no assessment and to cases where due to inadvertence	 oversight or any other reason no notice was given and therefore no assessment was made. This Court in The State of Punjab & Others vs Tara Chand Lajpatt Rai(1)	 reversed the decision of the Punjab High Court in Civil Writ No. 1088/61 and following the decision of this Court in Ghanshyamdas 's case (supra) stated at page 501: "This decision is	 therefore	 a clear authority for the proposition that assessment proceedings commence in the case of a registered dealer either when he furnishes a return or when a notice is issued to him under section 11(2) of the present Act	 and that if such proceedings are taken within the prescribed time though the assessment is fina lised subsequently	 even after the expiry of the prescribed period	 no question of limitation would arise". In the case of Tarachand Lajpat Rai (supra) the dealer had filed the Returns after the expiry of 30 days from the relevant date but they were not rejected by the Department on that ground. Notice under section 11 (2) of the Act was issued and that also was done before the expiry of period of 3 years ' as the period of limitation stood then in the other sub sections. On the authority of Ghan shyamdas 's case it was held "the assessment pro ceedings commenced either when the respondent firm filed the returns or in any event from the date of the said notice. Both the events	 therefore	 were within the prescribed time. " The decision of the Full Bench of the Punjab High Court in the case of Rameshwar Lal Sarup Chand (supra) was merely distinguished on the ground that the question decided in Ghanshyamdas 's case did not come up for consideration in Rameshwar Lal 's case. But we think it is high time that the decision of the Full Bench of the High Court in Rameshwar Lal 's case should be clearly and expressly over ruled now. An identical view had been expressed by his Court reversing the decision of the Punjab High Court in Letters Patent Appeal No. 319/63 in the case of The State of Punjab and another vs Murlidhar Mahabir prasad(2). The challenge before this Court in the case of Madhya Pradesh Industries Ltd. vs State of Maharashtra and Others(3)	 was whether sub section (3) of section 11A of the C.P. and Berar Sales Tax Act	 1947 was violative of Article 14 of the Constitution. The argument was repelled and it was stated at page 402 by Hegde	 J. (1) 19 S.T C:. 493 (2) 21 S.T.C. 29. (3) 22 S.T.C. 400. 725 delevering the judgment on behalf of himself	 Wanchoo	 C.J. and Mitter	J.: "This Court in Ghanshyamdas 's case specifically overruled the decision of the Bombay High Court in Bisesar House case. Therein this Court held that while s.11 (2) deals with pending proceedings	 section 11A concerns itself with matters which are not pending. This Court .further ruled that in the case of pending proceedings the Act has not pre scribed any period of limitation. That decision proceeds on the basis that section 11 (2) and section 11A cover different fields and that they do not overlap". Bachawat	 J. speaking for himself and Ramaswami	 J. went a step further and in their concurring judg ment stated at page 403: "There is no limitation for the issue of a notice under section 11 (2). This follows from a plain	 reading of section 11(2) independently of section 11A(3). Neither section 11(2) nor sec tion 11A(3) is violative of Article 14. A notice under section 11 (2) is issued in a pending pro ceeding	 where as a notice under section 1 I A( 1 ) initiates a new proceeding. There is a reasona ble basis for classification and differential treatment of the notices under sections 11(2) and 11A(1) for the purposes of limitation. " The majority opinion of the Full Bench of the Punjab High Court was delivered by two judges in the case of Rameshwar lal Sarupchandra (Supra) Pandit J ave a dissenting opin ion. It is wrong to say	 as stated by the majority	 that the expression "proceed to assess" and the word "assess" connote the same meaning. The ratio of the majority opinion is chiefly based upon the decision of the Full Bench of the Bombay High Court in Bisesar House 's case which decision was not approved by this Court and must be deemed to have been overruled. The majority we may also point out with respect	 committed a mistake in appreciating the deci sion of this Court in the case of Madan Lal Arora vs The Excise and Taxation Officer '	 Amritsar(1) Sarkar	 J.	 as he then was	 delivering the judgment on behalf of a Constitu tion Bench of this Court adverted to the facts of the case and stated that the registered dealer under the Punjab General Sales Tax Act had filed returns for the 4 quarters of the financial year ending on March 31	 1955 as also for the 4 quarters for the financial year ending on March 31	 1956. In respect of each year the Sales Tax Assessing Officer served three successive notices on the dealer one on March 7	 1958	 the other on April 4	 1958	 and the third on August 18	 1959. The first two notices were merely under section 11(2) of the Act. But in the last notice which was issued after the expiry of 3 years it was stated that on the dealer 's failure to produce the docu ments and other evi dence mentioned in the notice	 the case would be decided on best judgment assessment basis. The dealer did not comply with any of the notices and challenged with success by a petition under Article 32 of the Constitution the right of the authorities to	 make a best judgment assess ment. In that connection it was (1) 12 S.T.C. 387 726 pointed out that the period of 3 years mentioned in sub section (4) of section 11 of the Act had to be counted from the expiry of the period in relation to which the returns had been filed and on expiry of the said period the author ities could not proceed to make the best judgment assess ment. The third and the last notice given on August 18	 1959 was taken to be a notice to the dealer that the as sessing authority was proceeding to make the best judgment assessment and since this was done more than 3 years after expiry of all the 8 quarters ' in respect of the two years it was held to be without jurisdiction and the respondent was restrained from making any best judgment assessment on the petitioner for sales tax for any quarter of the financial years 1954 55 and 1955 56. The decision of this Court in Madan Lal Arora 's(1) case justifies our apprehension which we have mentioned in the beginning of our judgment to the effect that if a dealer fails to comply with the notice issued under section 11 (2) of the Act	 then in such a case	 even though there may not be any time limit for issuance of a notice	 but on the dealer 's failure to comply with it the assessing authority may be obliged to take recourse to sub section (4) attracting the bar of limitation of 5 years for proceeding to assess on the best judgment basis. The majority	 however	 was wrong when they said at page 949 of 15 S.T.C. with reference to Madan Lal Arora 's case: "In the case before the Supreme Court	 two notices were within three years and the third notice was beyond three years and their Lord ' ships held that the third notice beyond three years	 the Assessing Authority had no jurisdiction to make the assessment. If the phrase "proceed to assess" bears the meaning which the learned counsel for the State contends for	 namely	 that only a step towards assessment has to be taken and the assessment can be made at any time after the period of three years	 their Lordships would on the basis of the two notices within the period of limitation	 have come to a different conclusion and that is not what has been done. " This was	 it appears to us	 clearly a mistaken reading of the judgment of this Court. The majority in our opin ion	 was also wrong in importing the period of limitation provided in sub sections (4)	 (5) and (6) of section 11 of the Act into sub section (3) and in holding	 therefore	 that an assessment under sub section (3) must also be completed within 3 years from the last date on which the return should be filed under the Act. We are again constrained to point out that the majority of the Full Bench committed a mistake in thinking that	 this Court had held in Madan Lal Arora 's case that the period of 3 years had to be counted from the last date on which the return should be filed. The deci sion of the Full Bench of the Punjab High Court in the case of Ramashwar Lal 's case (supra) is clearly erroneous and must be over ruled. Pandit	 J. in his dissenting opinion had	 by and large	 taken a correct view in favour of the Revenue. (1) 12 S.T.C. 387. 727 Lastly	 we may also make a reference to a recent deci sion of this Court delivered by one of us (Untwalia	 J.) in the case of Gurbaksh Singh vs Union of India & Others(1) An argument quite similar to the one advanced before us was advanced on behalf of the assessee appellant in that case before this Court. It was argued that the period of 4 years of limitation prescribed under sub section (2a) of section 11 of the Bengal Finance (Sales Tax) Act	 1941 as extended to the Union Territory of Delhi	 should be imported into the revisional and the appellate power of the authori ties conferred on them under section 20. This argument was repelled and it was pointed out that .the legislature had not provided any period within which an order was to be made by an Appellate or Revisional authority; no such period should be imported in the exercise of the power on the basis of section 11 (2a). Mr. Desai relied upon the penal timate paragraph of this decision in support of his conten tion that in any view of the matter notice under section 11 (2) had to be issued and the assessment completed within a reasonable time. We do not accept this contention to be sound. The argument as presented cannot be accepted to be correct. In Gurbaksh Singh 's case it was not stated that the exercise of the revisional power suo moto could not be made after an undue long delay. On such an assumption it was merely found as a fact that there was no undue delay in the suo moto exercise of the power. In the result we do not find any merit in the appeals. They are dismissed with costs. Hearing fee one set only. V.P.S. Appeals dismissed.

The appellant is an inter State dealer. In respect of all the eight quarters of the years 1969 70 and 1970 71	 the appellant filed returns in time. In respect of the four quarters of 1969 70 the Assessing Authority did not accept the returns and issued notices under section 11(2) of the Punjab General Sales Tax Act	 1948	 requiring the appellant to produce evidence in support of the returns. Since the question of the appellant 's liability to pay central sales tax for an earlier assessment year (1962 63) was pending before the High Court	 the matter was not pursued by the Assessing Authority and was kept pending. After the High Court gave its decision against the appellant	 and while the matter was pending appeal in this Court	 the Assessing Authority took up the matter of assessment ' for the year 1969 70 by the issue of notice in September 1975. The appellant thereupon filed writ petitions in the High Court to quash the proceedings. In respect of the four quarters of the year 1970 71 notices under section 11(2) were issued by the Assessing Authority on January 30	 1976	 and the appel lant filed writ petitions in the High Court for quashing those proceedings also. All the ' writ petitions were dis missed by the High Court	 In appeal to this Court	 in view of the decision of this Court in appeal. the appellant did not agitate the question of its tax liability under the Central Sales ' Tax Act. but contended that	 (i) the Assessing Authority could not assess the tax payable by the appellant on the expiry of the period of 5 years from the end of each quarter in relation to the year 1970 71 the same contention was raised even though notice under section 11(2) was within time apropos the last ' quarter; and (2) the notice under section 11(2) and assessment under section 11(3) had to be completed within a reasonable time. Dismissing the appeals	 HELD: (1) Under section 10 of the Act read along with Rules framed thereunder	 the return has to be filed by a dealer for each quarter by the last day of the following month of the quarter and admitted sales tax as per the return has also got to be deposited. Where a registered dealer has filed the return the Assessing Authority can accept the return as correct and pass the assessment order under section 11(1) If the Assessing Authority does not accept the return he may issue notice under section 11(2) asking the asses see to produce evidence in support of the return. In such a. case the	 Assessing Authority shall hear the evidence produced by the dealer on the day specified in the notice issued under sub section (2)	 or adjourn the hearing to some other day and hear the evidence produced by the dealer on the adjourned day. or days. or may require the dealer to produce further evidence on specified points on the ad journed day	 or days. The Assessing Authority should under section 11 (3)	 on the day on which the hearing of the evidence is completed or 'as soon afterwards as may be '	 assess the amount of tax due from the dealer	 that is	 pass the order of assessment. [720 E H] Section 11(4) is attracted in a case. where a dealer having furnished a return fails to comply with the terms of a notice issued .under section 11 (2). In such a case	 the Assessing Authority has to take some effective steps	 such as issuance of a notice to the assessee	 within 5 years of the expiry of the period concerned	 intimating to him that he is proceeding to assess the tax due from the dealer to the best of his judgment. Under section 11(5)	 on failure of a dealer to furnish a return in respect of any period by the prescribed date the Assessing Authority	 after giving the dealer a reasonable opportunity of being heard can	 within 5 717 years after the expiry of the concerned period proceed to assess to the best of his judgment the amount of tax	 if any	 due from the dealer. Sub section (6) is attracted in the case of a dealer who	 being liable to pay tax under the Act	 had failed to apply for registration. Similar steps as the ones under sub section (5) are to be taken under sub section (6) within a period of 5 years after the expiry of the concerned period. It is thus seen that for taking action under sub sections (4)	 (5) and (6) of section 11 a time limit of 5 years has been fixed by the legislature. The reason is that best judgment assessments in the circumstances mentioned in any of the sub sections (4)	 (5) oF (6) are fresh proceedings and could not be allowed to be taken after the expiry of a certain reasonable time which the legislature has fixed at 5 years. But the legislature advisedly did not fix any period of time for taking steps or the passing of the assessment order under any of the sub sections (1)	 (2) or (3). Where a dealer files a return the proceeding under the Act commences and the issue of a notice under section 11(2) does not initiate any fresh proceedings. A notice under section 11(2) requiring the dealer to produce evidence can therefore be issued at any time after the filing of the return. because	 when once a return is duly made	 the assessment could be made at any time unless the statute prescribes a time limit. The ex pectancy of taking steps without any undue delay and within a reasonable time is an expectancy of prudence	 because	 where a notice under sub section (2) is issued when 5 years are about to expire and the dealer fails to comply with the terms of the notice the Assessing Authority may have to proceed to make the best judgment assessment under sub section (4) and he may not be able to do so if the period of 5 years had expired by then. [722 A G] Bisesar House vs State of Bombay & Others. 9 S.T.C. 654	 and Rameshwar Lal Sarup Chand vs U.S. Nanrath Excise & Taxation Officer	 Assessing Authority	 Amritsar and Another 15 S.T.C. 932 overruled. Ghanshyamdas vs Regional Assistant Commissioner of Sales Tax	 Nagpur & Others 14 S.T.C. 976	 The State of Panjab & Others vs Tara Chand Lajpat Rai 19 S.T.C. 493	 The State of Punjab and another vs Murlidhar Mahabir Prasad 21 S.T.C. 29	 Madhya Pradesh Industries Ltd. vs State of Maharashtra and Others 22 S.T.C. 400 and Madan Lal Arora vs The Excise and Taxation Officer	 Amritsar 12 S.T.C. 387 followed. (2) The case of Gurbux Singh vs Union of India is not an authority for the contention of the appel lant that the issue of the notice under section 11(2) and comple tion of assessment under section 11(3) should be within a reason able time. In that case it was pointed out that since the legislature had not provided any period of limitation within which an order was to be made by an Appellate or Revisional Authority	 the period of limitation prescribed in other sections could not be imported for the exercise of such power. It was not stated in that case that the exercise of the revisional power suo moto could not be made even after an undue long delay. It was merely found as a fact in that case that there was no undue delay in the exercise of the power. [727 A D] [Obiter. The phrase as soon afterwards as may be ' in section 11(3) may suggest that where assessment order under section 11(3) of the Act was passed after under delay after the completion of the hearing of the evidence produced 'by the dealer	 the order of assessment may not be valid. But that question does not arise in the present case. because	 the appellant has not yet produced any evidence].