Summarize the following court judgment. Appeal No. 1528 of 1971. (Appeal by Special Leave from the Judgment and Order dated 23 11 1970 of the Madras High Court in Tax case No. 398/7C (Revision No. 260/70) S.T. Desai and T.A. Ramachandran	 for the 	Appellant. V.P. Raman	 .Addl. Solicitor General for India. A.V. Rangan and Miss A. Subhashini	 for the Respondent. The	 Judgment of the Court was delivered by KHANNA	 J. This appeal by special leave is against the judgment of the Madras High Court Whereby. the High Court dismissed the petition flied by the appellant under section 38 of the Tamil Nadu General Sales Tax Act	 1959 (hereinaf ter referred to as the State Act). The matter relates to the assessment year 1960 61. The appellant firm is a dealer in cotton yarn. The appellant bought yarn from local dealers and manufacturers and	 in turn	 sold that yarn by way of inter State sale. Sales tax under the State Act on the yarn purchased by the appellant had been paid by those manufacturers and dealers. The inter State sales of yarn made by the appellant were as sessed to tax under the (hereinafter referred to as the Central Act) in the hands of the appel lant. The appellant claimed refund of the tax amounting to Rs. 16	769.96 paid under the State Act in respect of the yarn sold by it in the course of inter State trade in ac cordance with section 15(b) of the Central Act and the proviso to section 4 of the State Act read with rule 23 of the Tamil Nadu General Sales Tax Rules	 as these provisions stood at the relevant time. The Additional Commercial Taxation Officer admitted the claim of the appellant for refund of the tax only in respect of the sum of Rs. 5	562.59 and rejected the claim in respect of the balance On appeal the Additional Appellate Assistant Commissioner allowed refund of a further sum of Rs. 3	204.73 and rejected the claim regarding the balance of Rs. 8	002.64. On second appeal the 952 Appellate Tribunal relying upon the decision of the Madras High Court in M.A. Khader & Co. vs Deputy Commercial Taxa tion Officer(1)	 rejected the claim of the appellant for the balance of Rs. 8	002.64. At the instance of the State representative	 the Tribunal further held that the appellant was not entitled to get refund of the amount of Rs. 5	562.59 and Rs. 3	240.73 in respect of which relief had been granted by the Appellate Assistant Commissioner. The appellant thereafter preferred revision petition to the Madras High Court under section 38 of the State Act. The High Court dismissed the said petition after observing that the princi ple laid down in the case of M.A. Khader & Co. (supra) would apply to the facts of this case. The appellant hereafter came up in appeal to this Court by special leave. Before dealing with the point of controversy	 it may be apposite to refer to the material provisions of law	 'as they stood at the relevant time. A number of goods have been declared under section 14 of the Central Act to be of special importance. in inter State trade or commerce. Cotton yarn is one of those goods. Section 15 of the cen tral Act at the relevant time read as under: "15. Restrictions and conditions in regard to tax on sale or purchase of declared goods within a State. Every sales tax law of a State shall	 in so far as it imposes or authorises the imposition of a tax on the sale or purchase of declared goods	 be subject to the following restrictions and conditions	 namely : (a) the tax payable under that law in respect of any sale or purchase of such goods inside the State shall not exceed two per cent of the sale or purchase price thereof	 and such tax shall not be levied at more than one stage; (b) where a tax has been levied under that law in respect of the sale or purchase inside the State of any declared goods and such goods are sold in the course of inter State trade or commerce	 the tax so levied shall be refunded to such person in such manner and subject to such conditions as may be provided in any law in force in that State. " Section 4 of the State Act reads as under: "4. Tax in respect of declared goods. Notwithstanding anything contained in section 3	 the tax under this Act shall be payable by a dealer on the sale or purchase inside the State of declared goods at the rate and only at the point specified against each in .the Second Schedule on the turnover in such goods in each year	 whatever be the quantum of turnover in that year: Provided that where a tax has been levied under this section in respect of the sale or purchase of declared goods and such goods are sold in the course of inter State trade (1) 25 section T.c. 104. 953 or commerce the tax so levied shall be refund ed to such person in such manner and subject to such conditions as may be prescribed. " According to the Second Schedule to the Stale Act	 the tax on cotton yarn but excluding cotton yarn waste shall be one per cent at the point of the first sale in the State. Clauses (1) to (3) of rule 23 of the Madras General Sales Tax Rules	 1959 read as under: "23. (1) The tax levied under section 4 in respect of the sale or purchase inside the State of any goods specified therein shall	 if such goods are sold in the course of inter State trade or commerce	 be refunded in the manner and subject to the conditions pre scribed in this rule to the dealer who has made the inter State sale and has paid the tax under the 	 in respect of such sale. (2) Every ;such dealer who claims a refund under this rule shall within the time allowed in sub rule (3) submit to the assess ing authority a statement in Form A 4. (3) The statement referred to in sub rule (4) shall be submitted to the assessing authority not later than three months. from the date on which the dealer paid the Central sales tax due on the transaction in respect of which he claims refund of the State sales tax: Provided that the assessing authority may condone delays up to a period of fourteen days in the submission of the statement	 if he is satisfied that the dealer had sufficient cause for not submitting the statement within the said period. " In appeal before us	 Mr. Desai on behalf of the appel lant has assailed the judgment of the High Court and has urged that in accordance with clause (b) of section 15 of the Central Act	 the proviso to section 4 of the State Act and rule 23 of the Madras General Sales Tax Rules	 the sales tax under the State Act in respect of yarn which was the subject matter of inter State sale	 should have been paid to the appellant. The High Court	 according to the learned counsel	 was in error in holding to the contrary. As against that learned Additional Solicitor General has can vassed for the correctness of the view taken by the High Court. There is in our opinion considerable force in the contention advanced by Mr. Desai. Section 15 of the Central Act	 as it existed at the relevant time	 contemplates that every State law in so far as it imposes or authorises the imposition of tax on sale or purchase of declared goods	 would be subject to the re striction and condition that the tax payable under that law in respect of any sale of purchase of such goods inside the State shall not exceed two per cent of the sale or purchase price thereof and such tax shall not be levied at more than one stage. 954 Clause (b) of that section has a direct bearing	 and accord ing to that clause	 where tax has been levied under the State law in respect of sale or purchase of declared goods which are subsequently sold in the course of inter State trade or commerce	 the tax so levied shall be refunded to such person in such manner and subject to such conditions as may be prescribed in any law in force in that State. Section 4 of the State Act has been cnacted in conformity with section 15 of the Central Act. The proviso to that section deals with the refund of the sales tax levied under the State Act in respect of declared goods when such goods arc sold in the course of inter State trade or commerce. According to that proviso	 where a tax has been levied under section 4 in respect of the sale or purchase of declared goods and such goods are sold in the course of inter State trade or commerce	 the amount of tax shall bc re funded to such person in such manner and subject to such conditions as may be prescribed. In pursuance of this provi so	 the State Government has framed rule 23 of the Madras General Sales Tax Rules	 1959. According to clause (1) of that rule	 the refund of the sales tax has to be made to the dealer who makes the inter State sale and who has paid the sales tax under the Central Act in respect of such sale. Clause (3) of the rule provides that statement shall be submitted to the assessing authority by the aforesaid dealt not later than three months from the date on which the dealer pays the tax under the Central Act. It may be stated that the Madras General Sales Tax Rules	 1959 had to be placed on the table of both the Houses of the State	 legislature under sub section (5) of section 53 of the State Act. In the face of clause (b) of section 15 of the Central Act	 the proviso to section 4 of the State Act and rule 23 of the Madras General Sales Tax Rules	 we have no doubt in our mind that it is the appellant who is entitled to get the refund of the sales tax levied under the State	 Act in respect of the goods in question because it was the appel lant who sold the goods in the course of inter State trade and paid the sales tax under the Central Act on that ac count. The High Court in turning down the claim of the appellant relied upon its earlier decision in the case of M. A. Khader & Co. (supra). Perusal of the facts of that case would show that the assessee therein sought a writ of certi orari to quash the assessment made under the Central Act in respect of transactions which were admittedly interState sales. The question of asking for the refund of the sales tax paid under the State Act did not arise directly in that case. There were no doubt some observations in the course of that judgment	 according to which refund of the sales tax can be claimed only by the person who himself has earlier paid that tax	 and not by a person who has not himself paid such tax. So far as those observations are concerned	 we are of the opinion that the emphasis in the word "re funded" as used in clause (b) of section 15 of the Central Act and the proviso to section 4 of the State Act is on repayment of the amount. A word can have many meanings. To find out the exact connotation of a word in a statute	 we must look to the context in which it is used. The context would quite often provide the .key to meaning of the word and the sense it should carry. Its setting would give colour to it and provide cue to the intention of the legislature 955 in using it. A word	 as said by Holmes	 is not a crystal	 transparent and unchanged; it is the skin of a living thought and may vary greatly in colour and content according to the circumstances and the time in which it is used. The context in which the word "refunded" is used shows that such repayment need not be to the person who initially paid the tax. It is indeed for the State legislature to specify the person to whom such amount is to be repaid either in the statute enacted by it or to make a provision for that pur pose in the rules. The State legislature has made it Clear in the proviso to section 4 of the statute that provision in this respect would be made in the rules. The rules which have been framed leave no doubt that the amount has to be paid to the dealer who sells the goods in the course of inter State trade and who has paid the tax under the Central Act in respect of such sale. There is also no anomaly in paying the amount of the sales tax under the State 'Act to a dealer who sells de clared goods in the course of inter State trade	 even though he did not himself pay the tax under the State Act in re spect of those goods. The reason for that is that the price charged from such dealer by the person from whom he pur chases the goods would normally take into account the sales tax paid by the seller. Assuming that there was some ambiguity in the languages of clause (b) of section 15	 as it existed at the relevant time	 the matter is made clear by the amendment made in the Central Act by the Central Sales Tax (Amendment) Act	 1972 (Act No. 61 of 1972). As a result of the amendment	 clause (b) of section 15 of the Central Act reads as under: "(b) Where a tax has been levied under that law in respect of the sale or purchase inside the State of any declared goods and such goods are sold in the course of inter State trade or commerce	 and tax has been paid under this Act in respect of the sale of such goods in the course of inter State trade or commerce	 the tax levied under such law shall be reimbursed to the person making such sale in the course of inter State trade or commerce in such manner and subject to such conditions as may be provided in any law in force in that State." The amended provision makes it plain beyond any pale of controversy that the tax levied under the State Act in respect of declared goods has to be reimbursed to the person making sale of those goods in the course of inter State trade or commerce in such manner and subject to such condi tions as may be provided in the law in force in that State. According to the notes explaining the different clauses appended to the statement of objects and reasons of the Bill which emerged as the amending Act	 the amendment made in clause (b) makes it Clear that local sales tax would be reimbursed to the person making the sale in the course of inter State trade and commerce. The amendment made in clause (b) can thus be taken to be an exposition by the legislature itself of its intent contained in the earlier provision. We are not impressed by the argument of the learned Additional Solicitor General 11 13 3 85CI/76 956 that the amendment made in clause (b) was intended to mark a departure from the position in law as it existed before the amendment. The fact that the amendment of clause (b) of section 15 was not like some other provisions given retro spective effect	 would not materially affect the position. As already mentioned above	 the legislature as a result of the amendment	 Clarified what was implicit in the provisions as they existed earlier. An amendment which	 is by way of clarification of an earlier ambiguous provision can be useful aid in construing the earlier provision	 even though such amendment is not given retrospective effect. We may refer in this context to observations on page 147 of Craies on Statute Law (Sixth Ed.) which read as under: " . in Cape Brandy Syndicate vs I.R.C.(1) Lord Sterndale M.R. said: 'I think it is clearly established in Att. Gen. vs Clarkson	 supra	 that subsequent legislation may be looked at in order to see the proper construction to be put upon an earlier Act where that earlier Act is ambiguous. I quite agree that subsequent legislation if it pro ceeded on an erroneous construction of previ ous legislation cannot alter that previous legislation; but if there be any ambiguity in the earlier legislation	 then the subsequent legislation may fix the proper interpretation which is to be put upon the earlier '. " Looking to all the facts	 we are of the view that the appel lant firm is entitled to be paid the amount of sales tax levied under the State Act in respect of the goods sold by it in the course of inter State trade provided the appellant has paid the sales tax under the Central Act in respect of those sales. We accordingly accept the appeal	 set aside the judgment of the High Court and order that the appellant firm be paid the amount of sales tax levied under the State Act in respect of the goods sold by it in the course of inter State trade provided the appellant has paid the sales tax under the Central Act in respect of those sales. The appellant shall be entitled to recover its costs both in this Court as well as in the High Court from the respondent. P.B.R. Appeal al lowed. (1) at P. 156.

Section 15(a) of the as it existed at the rele ant time enacted that tax in respect of any sale or purchase of declared goods inside the State shall not be levied at more than one stage. According to cl. (b) if these goods were subsequently sold	 in the course of inter state trade	 the tax to levied shall be refunded to such person as prescribed in the State law. The proviso to section 4 of the Tamil Nadu General Sales Tax Act and r. 23 of the Rules provide for the refund of the sales tax in the type of cases mentioned in section 15(b). The appellant bought cotton yarn from local dealers and sold it by way of inter_state sale. It paid the State sales tax and claimed refund under section 15 (b)of the Central Act. It succeeded in part at each of the different stages; but on second appeal for the balance	 the Appellate Tribunal re jected the appellant 's claim and held that it was not enti tled to any refund including the relief granted by the Appellate Assistant Commissioner. The High Court rejected its revision petition. Allowing the appeal	 HELD: (1) The appellant firm is entitled to be paid the amount of sales tax levied under the State Act in respect of the goods sold by it in the course of inter State trade provided the appellant has paid the sales tax tinder the central Act in respect of those sales. [956 E] (2) The proviso to section 4 of the State Act read with the rules leaves no doubt that the amount has to be paid to the dealer who sells the goods in the course of inter State trade and who has paid the tax under the Central Act in respect of such sale. [955 B] (3)(a) There is no anomaly in paying the amount of the sales tax under the State Act to a dealer who sells declared goods in the course of inter State trade even though he did not himself pay the tax under the State Act in respect of those goods. The reason for that is the price charged from such dealer by the person from whom he purchased the goods would normally take into account the sales tax paid by the seller. [955 C] (b) The case of M. A. Khader & Co. vs Deputy Commer cial Taxation officer 25 S.T.C. 104 followed by the High Court is distinguishable on facts. The question of asking for refund of the sales tax paid under the State Act did not arise directly in that case. The emphasis in the word 'refunded ' as used in section 15(b) of the Central Act and the proviso to section 4 of the State Act. on repayment of the amount. [954 G] (4) (a) A word can have many meanings. To find out the exact connotaon of a word in a statute	 one should look to the context in which it is used. The context would quite often provide the key to meaning of the word and the sense it should carry. Its setting would give. colour to it and provide due to the intention of the legislature in using it. In the instant case the context in which the word "refund ed" is used shows that such repayment need not be to the person who initially paid the tax. [954 H] 951 (b) The amended provision makes it plain beyond doubt that the tax levied under the State Act in respect of declared goods has to be reimbursed to the person making sale of those goods in the course of inter State trade or commerce in such manner and subject to such conditions as may be provided in the law in force in that State. Accord ing to the notes on clauses appended to the statement of objects and reasons of the Bill the amendment made in cl. (b) makes it clear that local sales tax would be reimbursed to the person making the sale in the course of inter State trade and commerce. The amendment made in cl. (b) can thus be taken to be an exposition by the legislature itself of its intent contained in the earlier provision. [955 G] (c) The fact that the amendment of cl. (b) of section 15 was not like some other provisions given retrospective effect	 would not materially affect the position. The legislature as a result of the amendment clarified what was implicit in the provisions as they existed earlier. An amendment which is by way of clarification of an earlier ambiguous provision can be useful aid in construing the earlier provi sion even though such amendment is not given retrospective effect. [956 B]