Summarize the following court judgment. l Appeals Nos. 1682 to 1691 of 1967. Appeals by special leave from the judgment and order dated November 30	 1962 of the Allahabad High Court in Misc. Sales Tax Reference Nos. 144	 134	 143	 148	 124	 104	 105	 112 and 113 of 1958 respectively. M.C. Chagla and section section Shukla	 for the appellants (in all the appeals). C. B. Agarwala and 0. P. Rana	 for the respondents (in all appeals) The Judgment of the Court was delivered by Ramaswami	 J. These appeals are brought	 by special leave from the judgment of the Allahabad High Court dated November 30	 1962 in Miscellaneous Sales Tax Reference No. 144 of 1958 and other connected references. The appellants are manufacturers and dealers of oil in the Province of Uttar Pradesh and they have their own depots outside the Province. For the financial year 1948 49 and the subsequent period from April 1	 1949 to January 25	 1950 the appellants had sent their goods to their depots outside the Province of Uttar Pradesh	 for example	 to Calcutta in the State of West Bengal before any contract of sale in respect of the goods was made. 514 After the goods had reached the depots outside the Province of Uttar Pradesh	 they were sold to various parties. The Sales Tax Officers of Uttar Pradesh assessed the outside sales of all the appellants to sales tax under the Uttar Pradesh Sales Tax Act 15 of 1948	 hereinafter called the Act. It appears that this category of sales roughly amounted to more than one crore of rupees in the case of the appellants and the sales tax was levied at the rate of 3 pies per rupee subject to a rebate under section 5 of the Act and certain other adjustments. Aggrieved by the assessments	 the appellants took the matter in appeal under section 9 of the Act. The appeals were heard by various Appellate Officers called Judge	 Appeals. Some of the Appellate Officers held that the assessment was properly made	 while some others took the view that the assessments made for outside sales were improper and the assessment order should be quashed. The parties aggrieved by the appellate orders filed revisions before the revising authority called Judge	 Revisions under section 10 of the Act. By his judgment dated July 10	 1957 the Judge	 Revisions held that the out of State sales would be taxable (1) if the goods were in existence in the Province of Uttar Pradesh at the time when the contracts for sale were made	 and (2) if the goods were manufacturer after the contracts for sale were made in respect of them and were subsequently appropriated towards those contracts. He further held that sales of goods which were not only manufactured but also exported before any contracts for sale were made would not be taxable. Under section II of the Act	 the Commissioner of Sales Tax applied to the Revising Authority for making a reference of the case to the High Court	 By its order dated January 23	 1958 the Revising Authority drew up a statement of the case and referred to the Allahabad High Court the following two questions of law for determination : "(1) Whether clause (ii) of the Explanation 11 to Section 2 (h) U.P. Sales Tax Act provides for taxing sales in which goods were manufactured or produced in U.P. but for which the contract for sale was made after the goods had left the State ? (2) If the reply to the above is in affirmative	 whether this provision is ultra vires ?" By its judgment dated November 30	 1962	 the High Court ans wered the first question in the affirmative and the second question in the negative. It is necessary at this stage to refer to the relevant statutory provisions which were in force during the material period. Section 99 of the Government of India Act	 1935 authorised a Provincial Legislature	 subject to the provisions of that Act	 to make laws for the Province or for any part thereof. Section 515 100(3) of that Act provided that	 subject to the two preceding sub sections	 the Provincial Legislature had	 and the Federal Legislature had not	 power to make laws for any Province or any part thereof with respect to any of the matters enumerated in List 11 of the Seventh Schedule to that Act. The matter enumerated in Entry 48 in List 11 was "Taxes on the sale of goods and on advertisements. " It was in exercise of this legislative power that the Uttar Pradesh State Legislature enacted Act 15 of 1948 which came into force on April 1	 1948. Section 3 of the Act Provides as follows "3. Liability to tax under the Act Subject to the provisions of this Act	 every dealer shall pay on turnover in each assessment year a tax at the rate of 3 pies a rupee : Provided that (i) the Provincial Government may	 by notification in the official Gazette	 reduce the rate of tax on the turnover of any dealer or class of dealers or on the turnover in respect of any goods or class of goods; (ii) a dealer whose turnover in the previous year is less than Rs. 12	000/ or such larger amount as may be prescribed shall not be liable to pay the tax under this Act for the assessment year; Section 2(c) defines a "dealer" to mean "any person or association of persons carrying on the business of buying or selling and supplying goods in the United Provinces	 whether for commission	 remuneration or otherwise and includes any firm or Hindu joint family and any society	 club or association which sells or supplies Goods to its members but does not include any department of the Provincial Government or of the Indian Union (hereinafter called the 'Dominion Government ')". Section 2(h) is to the following effect " 'sale ' means	 with its grammatical variations and cognate expressions	 any transfer of property in goods for cash or deferred payment or other valuable conside ration and includes forward contracts but does not include a mortgage	 hypothecation	 charge or pledge Explanation II Notwithstanding anything. in the Indian 	 or any other law for the time being in force	 the sale of any goods 516 (i)which are actually in the United Provinces at the time when in respect thereof	 the contract of sale as defined in section 4 of that Act is made	 (ii)or which are produced or manufactured in the United Provinces by the producer or manufacturer thereof	 shall	 wherever the delivery or contract of sale is made	 be deemed for the purposes of this Act to have taken place in the United Provinces. Section 10 states "Power of revision (1)The Provincial Govern ment shall appoint as Revising Authority a person qualified under subsection (3) of section 220 of the Government of India Act	 1935	 for appointment as Judge of a High Court. (2) The appellate authority appointed under section 9 shall be under the superintendence and control of the Revising Authority. (3) The Revising Authority may in its discretion at any time suo motu or on being moved by the Commissioner of Sales Tax or on the application of any person aggrieved	 call for and examine the record of any order made or proceedings recorded by any appellate or assessing authority under this Act for the purpose of satisfying itself as to the legality or propriety of such order or as to the regularity of such proceedings and may pass such order as he thinks fit. (4) The Revising Authority shall not pass any order under sub section (3) adversely affecting any person unless an opportunity has been given to such person to be heard. (5) If the amount of assessment is reduced by the Revising Authority under sub section (3) it shall order the excess amount of tax if already realized to be refunded. " Section 11 is to the following effect "Statement of case to High Court (I) Within sixty days from the passing by the Revising Authority of any order under sub section (3) of section 9 or subsection (1) of section 10 affecting any liability of any dealer to pay tax under this Act	 such dealer may	 by application in writing accompanied by a fee of one hundred rupees	 require the Revising Authority 517 to refer to the High Court any question of law arising out of such order. (2) If	 for reasons to be recorded in writing	 the Revising Authority refuses to make such reference	 the applicant may	 within thirty days of such refusal	 either (a) withdraw his application (and if he does so	 the fee shall be refunded	 or (b) apply to the High Court against such refusal. (3) If upon the receipt of an application under clause (b) of sub section (2)	the High Court is not satisfied that such refusal was Justified	 it may require the Revising Authority to state a case and refer it to the High Court and on receipt of such requisition the Revising Authority shall state and refer the case accordingly. (4)If the High Court is not satisfied that 'the statement in a case referred under this section is sufficient to enable it to determine ' the question raised thereby	 it may refer the case back to the Revising Authority to make such additions thereto or alterations therein as the High Court may direct in that behalf. By the Amending Act of 1954 (U.P. Act VIII of 1954) which came into force on April 1	 1954 the following provisions were substituted in place of sub sections (1)	 (3) and (4): "(1) Within one hundred and twenty days from the date of service of the order under sub section (3) of section 10	 the person aggrieved	 may	 by application in writing require the Revising Authority to refer to the High Court any question of law arising out of such order (3) The provisions of subsection (1) shall also be applicable to the Commissioner of Sales Tax with the modification that it shall not be necessary for him to deposit any fee. (4) If on any application	 being made under subsection (1) or (3) the Revising Authority refuses to state the case the person aggrieved or the Commissioner of Sales Tax as the case may be	 may . . apply to the High Court . . " It was argued by Mr. Chagla in the first place that cl. (ii) of Explanation II to section 2(h) of the Act means that the goods should have been manufactured and produced in Uttar Pradesh for sale 518 to the person who had contracted to buy them. In other words	 there must be a contract for the sale before manufacture or produce. It was pointed out that in the present case the contract was entered into after the goods were manufactured and exported out of Uttar Pradesh. It was contended that as a matter of construction Explanation II does not cover these sales and the deeming provision will not make the appellants liable to pay sales tax in regard to such sales. We are unable to accept this argument as correct. There is nothing in the language or context of Explanation II to suggest that the goods should be produced or manufactured in Uttar Pradesh after the contracts for sale had been entered into. There is hence no warrant for the argument that for attracting the tax liability the goods must have been manufactured or produced after and not before the agreement for sale. In other words	 it is only necessary for the application of Explanation 11 that the goods must have been sold by the person who produced or manufactured them but there is no requirement that he must have manufactured or produced them after the agreement for sale. It is the admitted position in these appeals that the goods were manufactured or produced in Uttar Pradesh by the appellants carrying on business in Uttar Pradesh in those goods and therefore the appellants are liable to pay the tax on their sales irrespective of where and when the contracts for sale were entered into and also irrespective of the fact that the contracts were entered into after the goods had been exported out of Uttar Pradesh. We accordingly hold that the first question was rightly answered by the High Court. We proceed to consider the next	 and more important	 ques tion arising in these appeals	 namely	 whether the deeming provision contained in section 2(h) Explanation II(ii) of the Act was ultra vires the Government of India Act	 1935. It was argued by Mr. Chagla that the doctrine of nexus was not applicable to sales tax legislation	 because such legislation was concerned with the tax on the transaction of sale	 that is to say	 a completed sale and to break up a sale into its component parts and to take one or more such parts and to apply the theory to it would mean that the State would be entitled to impose tax on one or more of the ingredients or constituent elements of the transaction of sale which by itself will not amount to a sale. An identical question has been the subject matter of consideration by this Court in The Tata Iron & Steel Co.	 Ltd. vs The State of Bihar( '). It was held in that case that the provisions of section 4(1) read with section 2(g) second pro viso	 of the Bihar Sales Tax Act	 1947 as amended by the Bihar Sales Tax Amendment Act	 1949 were within the legislative competency of the Provincial Legislature of Bihar. The second proviso added by the amending Act did not extend the meaning (1) ; 519 of the expression "sale" so as to include a contract of sale : what it actually did was to lay down certain circumstances in which a sale	 although completed elsewhere	 was to be deemed to have taken place in Bihar. The circumstances mentioned in the proviso to section 2(g) of the Bihar Sales Tax Act	 namely	 the presence of the goods in Bihar at the date of the agreement of sale or their production or manufacture there must be held to constitute a sufficient nexus between the taxing Province and the sale wherever that might take place. It is manifest that a transaction of sale is a composite transaction and consists of legal ingredients like agreement of sale	 passing of title and delivery of goods but it is not necessary for the purpose of legislative jurisdiction that all legal ingredients of sale or even the transfer of title should have taken place inside the Province. It is sufficient if there is a proper territorial nexus or connection between the taxing authority and the transaction sought to be	 taxed. The fact that the goods are manufactured in the Province constitutes a real and pertinent nexus or connection which confers jurisdiction upon the Provincial Legislature to impose the tax. In dealing with the question whether the production or manufacture of goods constituted a sufficient nexus to the subject matter of taxation	 section R. Das	 C.J.	 observed as follows : "For the purpose of the present case it is sufficient to state that in a sale of goods the goods must of necessity play an important part	 for it is the goods in which	 as a result of the sale	 the property will pass. In our view the presence of the goods at the date of the agreement for sale in the taxing State or the production or manufacture in that State of goods the property wherein eventually passed as a result of the sale wherever that might have taken place	 constituted a sufficient nexus between the taxing State and the sale. In the first case the goods are actually within the State at the date of the agreement for sale and the property in those goods will generally pass within the State when they ' are ascertained by appropriation by the seller with the assent of the purchaser and delivered to the purchaser or his agent. Even if the property in those goods passes outside the State the ultimate sale relates to those very goods. In the second case the goods	 wherein the title passes eventually outside the State	 are produced or manufactured in Bihar and the sale wherever that takes place is by the same person who produced or manufactured the same in Bihar. The producer or manufacturer gets his sale price in respect of goods which were in Bihar at the date when the important event of agreement for sale was made or which were produced or manufactured in Bihar. These are relevant facts on which the State could well fasten its tax. " 520 The principle of this decision was reiterated by this Court in a subsequent case Bharat Sugar Mills Ltd. vs The State of Bihar( '). In The Tata Iron & Steel Co. Ltd. vs The State of Bihar( ')	 the course of dealing between the manufacturers and the purchasers was described as follows : "The intending purchaser has to apply for a permit to the Iron and Steel Controller I at Calcutta	 who forwards the requisition to the Chief Sales Officer of the assessee working in Calcutta. The Chief Sales Officer thereafter makes a 'works order ' and forwards it to Jamshedpur. The 'works order 'mentions the complete specification of the goods required. After the receipt of the 'works order ' the Jamshedpur factory initiates a 'rolling ' or 'manufacturing ' programme. After the goods are manufactured	 the Jamshedpur factory sends	 the invoice to the Controller of Accounts who prepares the forwarding notes	 and on the basis of these forwarding notes	 railway receipts are prepared. The goods are loaded in the wagons at Jamshedpur and despatched to various stations	 but the consignee in the railway receipt is the assessee itself and the freight also is paid by the assessee. The railway receipts are sent either to the branch offices of the assessee or to its bankers	 and after the purchaser pays the amount of consideration	 the railway receipt is delivered to him. These facts are admitted and the correctness of these facts are not disputed by the State of Bihar. " In our opinion	 the ratio of this decision applies to the present case and it must be accordingly held that Explanation II to section 2(h) of the Act is not ultra vires as being outside the legislative competence of the State of Uttar Pradesh. Reference was made in he course of argument to the recent decision of this Court in K. section Venkataraman & Co. vs State of Madras(3) in which it was held by the majority judgment that an authority created by a statute cannot question the vires of the statute or any of the provisions thereof under which it functions. The authority must act under the Act and not outside it and if it acts on the basis of a provision of that statute which is ultra vires	 to that extent it would be acting outside the Act. In that event	 a suit to question the validity of such an order made outside the Act would lie in a civil court. In this context it was pointed out by the majority judgment that the reasoning of the Judicial Committee in Raleigh Investment Co ' (4) case was based upon the as sumption that the question of ultra vires can be canvassed and finally decided through the machinery provided under the Income (1) 11 S.T.C. 793. (3) ; (2) ; (4) 74 I. A. 50. 521 tax Act. The Judicial Committee held that section 67 of the Income tax Act	 1922 was a bar to the maintainability of the suit. The argument on behalf of the assessee in that case was that an assessment was not an assessment "made under the Act" if the assessment gave effect to a provision which was ultra vires the Indian Legislature; that in law such a provision	 being a nullity	 was nonexistent; and 'that an assessment justifiable in whole or in part by reference to	 or by such a provision was more aptly described as an assessment not made under the Act than as an assessment made under the Act. The argument was negatived by the Judicial Committee for the reason that the circumstance that the assessing officer had taken into account an ultra vires provision of the Act was immaterial in determining whether the assessment was "made under the Act". The main reason that persuaded the Judicial Committee to accept the construction they placed on section 67 of the Income tax Act may be stated in their own words as follows: "The absence of such machinery would greatly assist the appellant on the question of construction and	 indeed	 it may be added that	 if there were no such machinery and if the section a effected to preclude the High Court in its ordinary civil jurisdiction from considering a point of ultra vires	 there would be a serious question whether the opening part of the section	 so far as it de barred the question of ultra vires being debated fell within the competence of the legislature. " It was held by this Court in K. section Venkataraman & Co. vs State of Madras( ') that the assumption underlying the reasoning of the Judicial Committee was not correct and it was not open to the Income tax Officer the Appellate Assistant Commissioner and the Appellate Tribunal to decide any question as to the ultra wires character of any provision of the Income tax Act. In other words	 the question of ultra vires could not be deemed to arise out of the Tribunal 's order and if an assessee raises such a question	 the Tribunal can only reject it on the ground that it has no jurisdiction to entertain the objection or to decide upon it. The High Court also cannot possibly give any decision on the question of ultra vires	 because its jurisdiction under section 66 is a special advisory jurisdiction and its scope is strictly limited. On behalf of the appellants it was suggested that in the present. case the Revising Authority	 under the Act cannot	 on a similar line of reasoning	 refer to the High Court any question regarding the constitutional validity of Explanation 11 of section 2(h) of the Act. It was	 however	 pointed out on behalf of the respondents that in a number of cases in which proceedings relating to taxation have reached the High Courts by way of a reference	 appeal or revision	 the question of constitu (1) [1966] 2 S.C.R.229. 522 tional validity of the statute under which the authority functioned was raised	 entertained and decided. For instance	 in Tata Iron & Steel Co. Ltd. vs State of Bihar(1) a reference was made by the Board of Revenue raising questions as to the validity of certain provisions of the Bihar Sales tax Act and decided by the High Court	 and ultimately by this Court. Similarly	 in Sardar Baldev	 Singh vs C.I.T.	 Delhi '& Ajmer(2) in an appeal from the order of the Income tax Appellate Tribunal with special leave	 the constitutional validity of section 23A of the Indian Income tax Act	 1922 was permitted to be challenged. Again	 in Navinchandra Mafatlal vs The C.I.T.	 Bombay City(3) in a refrence under section 66(1) of the Indian Income tax Act	 1922 a question as to the vires of section 12 B of the Indian Income tax Act was raised before the Income tax Appellate Tribunal and was referred to the Bombay High Court. This Court in appeal from the opinion expressed by the High Court on on the reference also considered that question. Also	 in Gannon Dunkerley & Co. vs State of Madras(4)	 the proceeding reached the High Court of Madras in a revision petition under section 12 B of the Madras General Sales Tax Act	 1939 and the High Court entertained the plea of ultra vires and decided it in favour of the tax payer. It is	 however	 not necessary in the present case for us to decide the question as to whether the principle laid down in K. section Venkataraman 's case(5) is applicable. The reason is that the apellants did not challenge the jurisdiction of the High Court to examine the question of law regarding the constitutional validity of Explanation 11 to section 2 (h) of the Act. Nor was any such challenge made in the Special Leave Petition to this Court or in the statement of the case. On the contrary	 the appellant has itself applied to the Judge	 Revisions under section 10 of the Act contending the Explanation II to section 2(h) was ultra vires. It is not therefore open to the appellants to deny the jurisdiction of the Revisional Authority to decide the question or to challenge the jurisdiction of the High Court to examine the question of law referred to it under section I 1 of the Act and to pronounce upon the constitutional validity of the impugned section. In other words	 it must be taken that the appellants had voluntarily submitted to the jurisdiction of the Revisional Authority and of the High Court on the matter in issue and having submitted to the jurisdiction and having taken the chance of judgment in its favour	 it is not right that the Appellants should take exception to the jurisdiction of the High Court when the judgment has gone against it. We cannot therefore permit the appellants to canvass in this Court for the first time the question whether it was competent for the (1) ; (2) ; (3) [1955] 1 S.C.R. 829. (4) I.L.R. (5) [1966] 2 S.C.R.229. 523 High Court to decide the question of law referred to it under section 11 of the Act. We accordingly reject the	 argument of the appellants on this aspect of the case. It was lastly submitted by Mr. Chagla that a reference to the High Court under section II of the Act at the instance of the Commissioner of Sales tax was incompetent as the Commissioner was neither a dealee nor 'a person aggrieved within the meaning of the section as it originally stood and the amendment effected in sub section (3) of section I 1 by U.P. Sales tax Act 8 of 1954 which came into force on April 1	 1954 was not retrospective in character and could not apply to proceedings which had been initiated earlier before Sales tax authorities as well as before the Revising Authority. It was pointed out that the appellate order was made on January 4	 1952 and the revision application was filed before the amending Act of 1954 came into force. It further appears that the revision application was disposed of on July 8	 1957 by the Revising Authority. The contention put forward on behalf of the appellants was that the Commissioner had no power to apply for a reference at the time the appellants had made the application for revision. It was conceded by Mr. Chagla that at the time the Commissioner applied for a reference under section 11 of the Act the amending Act 1954 had already come into force and under the amended section the Commissioner was empowered to ask for a reference. The point taken was that the material date was the date on which the appellants made the application for revision and not the date on which the application was actually decided by the Revising Authority. We are unable to accept this argument as correct. The right to apply for a reference is conferred upon a person aggrieved by an order passed under section 10 and this right exists regardless of when the application for revision was made. Only the existence of an order under section 10 is required for the accrual of the right to make an application for a reference. It was suggested by Mr. Chagla that the Commissioner did not have the right to apply for a reference because the right did not exist when the appellants had made the application for revision. But the right did exist on the date on which the Commissioner applied for a reference and there is nothing in the language or context of section II to suggest that the Commissioner could exercise the right only if it existed on the date on which the application for revision had been made. On behalf of the appellants Mr. Chagla referred to the well recognised rule that a statute should be interpreted	 as far as possible	 so as to respect vested rights. But this rule has no application to the present case for we do not think that amendment of section 1 1 of the Act by enabling the Commissioner also to ask for a reference of a question to the High Court alters any vested or substan tive right of the assessee. On the contrary	 we consider that the L7Sup. C.1168 9 524 amendment is merely a procedural matter and the present case falls within the general principle that the presumption against a retrospective construction has no application to enactments which affect only the procedure and practice of courts. For "it is perfectly settled that if the legislature forms a new procedure	 that	 instead of proceeding in this form or that	 you should proceed in another and a different way	 clearly there bygone transactions are to be sued for and enforced according to the new form of procedure. Alterations in the form of procedure are always retrospective	 unless there is some good reason or other why they should not be." (Gardner. vs Lucas) (1). We	 are accordingly of the opinion that Mr.Chagla is Unable to make good his argument on this aspect of the case. ' For 'these reasons we hold that there is no merit in these appeals which are accordingly dismissed with costs there will be one hearing fee. V.P.S Appeals dismissed. (1) 	603.

For the period 1st April 1948 to 25th January 1950	 goods (oil) were manufactured produced in the State of Uttar Pradesh by the appellants who were carrying on business in the State in those goods. Part of the goods were sent to their depots outside the State before any contract of sale in respect of them was made	 and thereafter	 sold to various parties. those outside sales were also assessed to sales tax under the U.P. sales Tax Act	 1948. The matter was taken to the Appellate Authority and thereafter to the Revising Authority constituted under the Act. Though the revision was filed before last April 1954 when the Amending Act of 1954 came into force	 it was disposed of in 1957	 in favour of the appellants. On the application of the commissioner of Sales Tax two questions of law were referred to the High Court one of which related to the constitutional validity of Explanation II (ii) to section 2(h) of the Act	 according to which	 the sale of any goods 'which are produced or manufactured in U.P. by the producer or manufacture thereof	 shall	 wherever the delivery 'or contract of We is made	 be deemed for the purposes of this Act to 	have taken place in U.P ' The High Court decided both questions in favour of the Commissioner. In appeal to this Court it was contended that : (1) For attracting tax liability the Explanation requires that the goods should have been manufactured or produced in U.P. after the contract of sale was entered into 	 (2) the Explanation was ultra vires as being outside legislative competence	 because	 Wes tax legislation was concerned with tax on the transaction of a completed sale	 and a State could not impose sales tax on the basis that one of the component parts of sale constitutes sufficient nexus between the taxing state and the sale; (3) the Revising Authority could not refer to the High Court and the High Court could not decided on such reference	 any question regarding the constitutional validity the Explanation; and (4) the Revising Authority could not make a reference to the High Court under section 11	 at the instance of the Commissioner	 as the Commissioner had no power to apply when the revision was filed before the Authority but was empowered to do so only by the amending Act of 1954 which had no retrospective operation. HELD : (I) For the application of the Explanation and attracting tax liability	 it is only necessary that the goods must have been sold by the person who produced or manufactured them	 but there is no requirement that he must have manufactured or produced them after the contract of sale and not before. (518 C] (2)To confer jurisdiction upon the 'State Legislature to impose sales tax	 'it is sufficient if there is a proper territorial nexus or connection 512 513 between the taxing authority and the transaction sought to be taxed. and	 the fact that goods were manufactured in the State constitutes a real and pertinent nexus. [519 C] The Tata Iron and Steel Co. Ltd. vs State of Bihar	 ; and Bharat Siigar Mills vs The State of Bihar	 11 S.T.C. 793	 followed (3) The appellants did not challenge the jurisdiction of the High Court to examine the constitutional validity of the Explanation; nor was any such challenge made in the special leave petition to this Court or in the statement of case. On the contrary	 the appellants contended in the revision before the Revising Authority that the Explanation was ultra vires. Therefore	 having voluntarily submitted to the jurisdiction of the Revising Authority it is not open to the appellants to challenge the. jurisdiction Of the Revising Authority to refer the question of the constitutional validity of the Explanation to the High Court	 or of the High Court to decide it. [522 E G] (4) The Commissioner had the power to apply for a reference on the date he applied for a reference	 as the amending Act had by then come into force. There is nothing in the language or in the context of section 1 1 to suggest that he could exercise the right only if it existed on the date on which the revision was filed before the Revising Authority. The rule that a statute should be interpreted	 as far as possible	 so as to respect vested rights has no application because		 the amendment does not affect any vested right of the appellants	 but only deals with a procedural matter. [523 E H] Gardner vs Lucas	 	 603	 applied.