Summarize the following court judgment. ivil Appeal No. 1451 of 1968. Appeal from the judgment and decree dated March 11	 1965 of the Andhra Pradesh High Court in A.S. Nos. 93 and 169 of 1957. Rajeshwara Rao and B. Parthasarathi	 for the appellant. D. Munikanniah and A.V.V. Nair	 for the respondent. The Judgment of the Court was delivered by Ramaswami	 J. This appeal is brought by certificate from the judgment of the High Court of Andhra Pradesh dated March 11	 1965 in A.S. Nos. 93 and 169 of 1957. The appellant was a firm of dealers in pulses at Vijayawada. It was sending pulses like green gram and black gram to other States viz.: Bombay	 Bengal	 Madras and Kerala by rail in the course of their business. The consignments were addressed to 'self ' and the railway receipts were endorsed in favour of Banks for delivery against payments. The purchasers obtained the railway receipts after payments and took delivery of the goods. The total turnover of the business of the appellant for the year 1949 50 was Rs. 17	05	144 2 2. Of the said turnover a sum of Rs. 3	61	442 7 3 represented the turnover of sales effected outside the then Madras State. For the assessment year 1949 50 the Deputy Commercial Tax Officer collected sales tax on the total turnover without exempting the value of the sales effected outside the State. The appellant was permitted to pay sales tax under(r. 12 of the Madras General Sales Tax (Turnover and Assessment) Rules. The appellant submitted monthly returns and paid sales tax without claiming any such exemption till the end of January	 1950. But in	 the returns for the months of February and March	 1950 the appellant claimed exemption on sales effected outside the State. The appellant submitted a consolidated return exhibit A 18 to the Deputy Commercial Tax Officer on March 30	 1950 claiming exemption in respect of a sum of Rs. 10	37	334 7 9 being the value of the sales effected outside the 745 State or the period commencing from April 1	 1949 and ending January 31	 1950. The Deputy Commercial Tax Officer fixed the taxable turnover of the appellant at Rs. 17	05	14 4 2 2 and issued a notice exhibit A 23 dated October 24	 1950 to show cause why the appellant should not be assessed accordingly. The appellant was thereafter held liable to pay tax amounting to Rs. 26	642 14 0 on a net turnover of Rs. 17	05	144 2 2. The appellant preferred an appeal to the Commercial Tax Officer and a revision petition to the Board of Revenue	 Madras but was unsuccessful. The appellant	 therefore brought a suit for the recovery of Rs. 21	270 13 0 being the amount of tax illegally collected from him together with interest	 contending that the sales effected outside the State could not be taxed under article 285 (1)(a) of the Constitution of India. The State of Madras contested the suit on the ground that the sales were taxable as they fell within the purview of explanation 2 to section 2(h) of the Madras General Sales Tax Act	 1939 hereinafter referred to. as the Act). The Subordinate Judge held that for the period from April 1	 1949 to January 25	 1950 the appellant was not entitled to impeach the assessment on the turnover relating to sales outside the State. As regards the period from March 26	 1950 to March 31	 1950 the Subordinate Judge took the view that the past of the turnover relating to	 outside sales was not liable to salestax but as there was a single order of assessment for the entire period the entire assessment was illegal. Again the judgment of the Subordinate Judge both the appellant and the respondent filed appeals A.S. No. 93 of 1957 and A.S. No. 169 of 1957 to the High Court of Andhra Pradesh. But its order dated April 18	 1960 in Appeal No. 169 of 1957 the High Court called for a finding from the trial court as to whether the appellant was able to prove the facts entitling him to invoke the explanation to article 286(1)(a). By its order dated July 21	 1962 the trial court submitted a finding to the effect that in view of the decision of the Supreme Court in India Copper Corporation Ltd. vs The State of Bihar(1) the burden of proof was not on the appellant and that the finding will have to be given in its favour. But by its order dated March 5	 1963 the High Court directed the Subordinate Judge to record a finding after considering the evidence adduced by the appellant as to whether the goods in question were delivered for consumption within the delivery States. In its order dated March 22	 1963 the trial court	 after considering the evidence given by the appellant 's witnesses came to the conclusion that the deliveries were not made for purposes of consumption within the delivery States only. The High Court by a common judgment dated March 11	 1965 in A.S. No. 93 and 169 of 1957 held that the appellant could not claim the benefit under article 286(1)(a) of the Constitution in the (1) 12S.T.C. 56. 746 absence of evidence as to how the wholesalers disposed of the goods after obtaining delivery and therefore the entire turnover for the year 1949 50 would be assessable to tax. In the result A.S. No. 169 of 1957 flied by the respondent was allowed and A.S. No. 93 of 1957 filed by the appellant was dismissed. The Madras General Sales Tax Act	 1939 was enacted in exercise of the legislative authority conferred upon the Provincial Legislatures by Entry 48 of List II read with section 100(3) of the Government of India Act	 1935. The explanation to section 2(h) of this Act is as follows: "Notwithstanding anything to the contrary in the Indian the sale or purchase of any goods shall be deemed	 for the purpose of this Act	 to have taken place in this Province	 wherever the contract of sale or purchase might have been made. (a) If the goods. were actually in this Province at the time when the contract of sale or purchase in respect thereof was made or	 (b) in case the contract was for the sale or purchase of future goods by description	 then	 if the goods are actually produced in this Province at any time after the contract of sale or purchase in respect thereof was made." Under Entry 48 of List II of the Government of India Act	 1935the Provincial Legislatures could tax sales by selecting some fact or circumstances which provided a territorial nexus with the taxing power of the State even if the property in the goods sold passed outside the Province or the delivery under the contract of sale took place outside the Province. Legislation taxing sales depending solely upon the existence of a nexus	 such as production or manufacture of the goods	 or presence of the goods in the Province at the date of the contract of sale	 between the sale and the legislating Province could competently be enacted under the Government of India Act	 1935. [see Tata Iron & Steel Ca. Ltd. vs The State of Bihar(1) and Poppatlal Shah vs The State of Madras ( 2 ) ]. By article 286 of the Constitution certain fetters were placed upon the legislative powers of the States as follows: "(1) No law of a State shall impose	 or authorise the imposition of	 a tax on the sale or purchase of goods where such sale or purchase takes place (1) ; (2) [19531 S.C.R. 677. 747 (a) outside the State; or (b) in the course of the import of the goods into	 or export of the goods out of	 the territory of India. Explanation. For the purposes of sub clause (a)	 a sale or purchase shall be deemed to have taken place in the State in which the goods have actually been delivered as a direct result of such sale or purchase for the purpose of consumption in that State	 notwithstanding the fact that under the general law relating to sale of goods the property in the goods has by reason of such sale or purchase passed in another State. (2) Except in so far as Parliament may by law otherwise provide	 no law of a State shall impose	 or authorise the imposition of	 a tax on the sale or purchase of any goods where such sale or purchase takes place in the course of inter State trade or commerce; Provided that the President may by order direct that any tax on the sale or purchase of goods which was being lawfully levied by the Government of any State immediately before the commencement of this Constitution shall	 notwithstanding that the imposition of such tax is contrary to the provisions of this clause	 continue to be levied until the thirty first day of March	 1951. (3) No law made by the Legislature of a State imposing	 or authorising the imposition of	 a tax on the sale or purchase of any such goods as have been declared by Parliament by law to be essential for the life of the community shall have effect unless it has been reserved for the consideration of the President and has received his assent." Therefore	 by incorporating section 22 of the Madras Act read with article 286	 notwithstanding the amplitude of the power otherwise granted by the charging section read with the. definition of 'sale '	 a cumulative fetter of triple dimension was imposed upon the taxing power of the State. The Legislature of the Madras State could not since January 26	 1950	 levy a tax on sale of goods taking place outside the State or in the course of import of the goods into	 or export of the goods out of	 the territory of India	 or on sale of any goods where such sale took place in the course of inter State trade or commerce. By the Explanation to article 286(1)(a) which is incorporated by section 22 of the Madras Act a sate is deemed to take place in the State in which the goods are actually delivered as a. direct result of such sale for the purpose 748 of consumption in that State even though under the law relating to sale of goods the property in the goods has by reason of such sale passed in another State. In the State of Bombay and Anr. vs The United Motors (India) Ltd.(1) it was held that since the enactment of article 286(1)(a) a sale described in the Explanation which may for convenience be called an "Explanation sale" is taxable by that State alone in which the goods sold are actually delivered as a direct result of sale for the purpose of consumption in that State. With a view to impose restrictions on the taxing power of the States under the pre Constitution statutes	 amendments were made in those statutes by the Adaptation of Laws Order. As regards the Madras Act the President issued on July 8	 1952 the Fourth Amendment inserting a new section	 section 22 in that Act. It runs as follows: "Nothing contained in this Act shall be deemed to impose or authorise the imposition of a tax on the sale or purchase of any goods where such sale or purchase takes place (a) (i) outside the State of Madras	 or (ii) in the course of import of the goods into the territory of India or of the export of the goods out of such territory	 or (b) except in so far as Parliament may by law otherwise provide	 after the 31st March.	 1951	 in the course of inter State trade or commerce	 and the provisions of this Act shall be read and construed accordingly. Explanation : For the purposes of cl. (a)(i) a sale or purchase shall be deemed to have taken place in the State in which the goods have actually been delivered as a direct result of such sale or purchase for the purpose of consumption in that State	 notwithstanding the fact that under the general law relating to sale of goods the property in the goods has by reason of such sale or purchase passed in another State. " By this amendment the same restrictions were engrafted on the pre Constitution statute as were imposed by article 286 of the Constitution upon post Constitution statutes. As regards the sales for the period from April	 1949 to January 25	 1950 it was admitted before the Deputy Commercial (1) ; 749 Tax Officer that the goods were actually in the Madras State at the time the contract of sale was concluded. It was for this reason that the Deputy Commercial Tax Officer negatived the claim which the appellant made in respect of those sales. It appears that in the trial court the appellant challenged the constitutional validity of explanation to section 2(h) of the Act. But in view of the decision of this Court in the Tata Iron & Steel Co 's case(1) and Poppatlal Shah 's case(2) counsel on behalf of the appellant did not seriously dispute the validity of the assessment in regard to sales from April 1	 1949 to January 25	 1950. With regard to the period from January 26	 1950 to March 31	 1950 the contention of the appellant ' is that the High Court was in error in holding that the burden of proof was on the appellant to show that there was not only delivery of goods for consumption within the delivery States but there was actual consumption of the goods in those States. In our opinion the argument is well founded and must be accepted as correct. In India Copper Corporation 's case(3) it was pointed out by this Court that if the goods were as a direct result Of a sale delivered outside the State of Bihar for the purpose of consumption in the State of first delivery	 the assessee would be entitled to the exemption from sales tax by virtue of the Explanation to Art 286(1)(a) of the Constitution and it would not be necessary for the assessee to prove further that the goods so delivered were actually consumed in the State of first destination. In the present case the Subordinate Judge has	 upon a consideration of the evidence adduced by the parties stated in his report dated June 27	 1962 that the intention of the appellant was that the sale and delivery should be for the purpose of consumption in the delivery States. It is true that in his subsequent report dated March 22	 1963 the Subordinate Judge gave a different finding. But it is obvious that the subsequent report of the Subordinate Judge is vitiated because the principle laid down by this Court in India Copper Corporation 's case(3) has not been taken into account. Having regard to the evidence adduced by the appellant in this case we are satisfied that the part of the turnover which related to sale from 2	 January 26	 1950 to March 31	 1950 was not liable to sales tax and the levy of sales tax from the appellant to this extent is illegal. The next question arising in this appeal is whether the assessment order of the Deputy Commercial Tax Officer for the year 1949 50 is illegal in its entirety notwithstanding the fact that the State Government had a right to levy sales tax on outside sales (1) ; (2) ; (3) 12 S.T.C. 56. 750 which were effected prior to January 26	 1950. It was argued for the appellant that the assessment must be treated as one and indivisible and if a part of the assessment is illegal the entire assessment must be deemed to be infected and treated as invalid. In support of this argument reference was made to the decision of this Court in Ram Narain Sons Ltd. vs Assistant Commissioner of Sales Tax(1) in which this Court observed as follows: "The necessity for doing so; is	 however	 obviated by reason of the fact that the assessment is one composite whole relating to. the pre Constitution as well as the post Constitution periods and is invalid in toto. There is authority for the proposition that when an assessment consists of a single undivided sum in respect of the totality of the property treated as assessable	 the wrongful inclusion in it of certain items of property which by virtue of a provision of law were expressly exempted from taxation renders the assessment invalid in toto." The Court cited with approval a passage from the judgment of the Judicial Committee in Bennett & White (Calgary) Ltd.and Municipal District of Sugar City No. 5(2). "When an assessment is not for an entire sum	 but for separate sums	 dissected and earmarked each of them to a separate assessable item	 a Court can sever the items and cut out one or more along with the sum attributed to it	 while affirming the residue. But where the assessment consists of a single undivided sum in respect of the totality of property treated as assessable	 and when one component (not dismissible as 'de minimis ') as on any view not assessable and wrongly included	 it would seem clear that such a procedure is barred	 and the assessment is bad wholly. That matter is covered by authority. In Montreal Light	 Heat & Power Consolidated vs City of Westmount(3) the Court (see especially per Anglin	 C.J) in these conditions held that an assessment which was bad in part was infected throughout	 and treated it as invalid. Here their Lordshis are of opinion	 by parity of reasoning	 that the assessment was invalid in toto. " Applaying the principle to the special facts are circumstances of the case the Court set aside the orders of assessment and directed that the case should be remanded to the Assessment Officer for reassessment of the appellants in accordance with law. The same principle was applied but with a different result in the later case (1) 6 S.T.C. 627 at 637. (2) at p. 816. (3) 751 the State of Jammu & Kashmir vs Caltex (India) Ltd. (1) in which the question arose as regards the validity of an assessment of sales tax of all retails sales of motor spirit. The Petrol Taxation Officer assessed the respondent to pay sales tax for the period January 1955 to May	 1959 under section 3 of the Jammu & Kashmir Motor Spirit (Taxation of Sales) Act	 2005. The respondent applied under section 103 of the Constitution of Jammu & Kashmir and a single Judge of the High Court held that the respondent was liable to pay sales tax only in respect of the sales which took place during the period January to September	 1955 and issued a writ restrainig the appellants from levying tax for the period October	 1955 to May	 1959. On appeal a Division Bench of the High Court quashed the assessment for the entire period. On appeal to this Court it was held that though there was one order of assessment for the period January 1	 1955 to May 1959 the assessment could be split up and dissected and the items of sale could be separated and taxed for different periods. It was pointed out that the sales tax was imposed in the ultimate analysis on receipts from individual sales or purchases of goods effected during the entire period	 and	 therefore	 a writ of mandamus could. be issued directing the appellant not to realise sales tax with regard to transactions of sale during the period from September 7	 1955 to May	 1959. A similar question arose for determination in an American case [Frank Rattarman vs Western Union Telegraph Co.(2)]. The question in that case was "whether a single tax	 assessed under the Revised Statutes of Ohio	 section 2778	 upon the receipts of a telegraph company which receipts were derived partly from inter state commerce and partly from commerce ' within the State but which were returned and assessed in gross and without separation or apportionment	 is wholly invalid	 or invalid only in the proportion and to the extent that the said receipts were derived 	from interstate commerce". It was held unanimously by the Supreme Court of the United States that the assessment was not wholly invalid but it was invalid only in proportion to the extent that such receipts were derived from interstate commerce. It was observed that where the subjects of taxation can be separated so that that which arises from interstate commerce can be distinguished from that which arises from commerce wholly within the State	 the Court will act upon this distinction	 and will restrain the tax on interstate commerce. while permitting the State to collect that upon commerce wholly within its own territory. The principle of this case has been consistetly followed in American cases: [see Bowman vs Continental Company(3)]. This case has been cited with approval by this Court in The State of Bombay (1) 17 S.T	C. 612. (2) ; (3) C.I./69 4 752 vs The United Motors (India) Ltd.(1) wherein it was observed that the same principle should be applied in dealing with taxing statutes in this country also. In the present case we are of opinion that though there is a single order of assessment for the period from April 1	 1949 to March 31	 1950 the assessment could be split up and dissected and the items of sale separated and taxed for different periods. It is quite easy in this case to ascertain the turnover of the appellant for the pre Constitution and post Constitution periods for these figures are furnished in the plaint by the appellant himself. It is open to the Court in these circumstances to sever the illegal part of the assessment and give a declaration with regard to that part alone instead of declaring the entire assessment void. For these reasons we hold that the appellant should be granted a declaration that the order of assessment made by the Deputy Commercial Tax Officer for the year 1949 50 is invalid to the extent that the levy of sales tax is made on sales relating to. goods which were delivered for the purpose of consumption outside the State for the period from January 26	 1950 to March 31	 1950. The result is that the appellant is entitled to a refund of the amount illegally collected from him for the period from January 26	 1950 to March 31	 1950. The trial court has already found that the appellant is entitled to claim exemption with regard to. turnover for this period to the extent of Rs. 3	34	107 15 6 and the tax payable on this sum is Rs. 5	220 7 0. The appellant is. therefore	 entitled to a decree for the refund of Rs. 5	220 7 0. The appellant is also entitled to interest at 6% per annum from the date of suit till realisation of this amount. For these reasons we allow this appeal and set aside the judgment of the Andhra Pradesh High Court dated March 11	 1965 in A.S. Nos. 93 and 169 of 1957 and allow this appeal to the extent indicated above. There will be no order with regard to costs. R.K.P.S. Appeal allowed. (1) ; at 1097.

The appellant	 a dealer in pulses in Vijayawada in Madras State made certain sales outside the State during the assessment year 1949 50. The appellant claimed exemption from sales tax of sales effected outside the State during the year but the Deputy Commercial Tax Officer disallowed the claim. A first appeal and a revision petition to the Board of Revenue were unsuccessful. The appellant thereafter brought a suit for the recovery of tax collected from him with interest contending that part of sales effected outside the State could not be taxed under article 285(1)(a) of the Constitution. The Trial Court held that the assessment to tax of the sales during the period from April 1	 1949 to January 25	 1950 ' could not be impeached but the sales from January 26 to March 31 outside the State were not liable to sales tax; as there was a single order of assessment 'for the whole year	 the entire assessment was illegal. In appeal to the High Court	 and upon a direction from that Court	 the Trial Court gave a finding that deliveries of the goods were not made for purposes of consumption within the delivery State only. The High Court. therefore. allowed the appeal holding that the appellant could not claim the benefit under Article 286(1)(a) in the absence of evidence as to how the whole sales disposed of the goods after obtaining delivery and therefore the entire turn over for the year 1949 50 would be assessable to tax. In the appeal to this Court	 it was contended inter alia (i) that the High Court was in error in holding that the burden of proof was on the appellant to show that there was not only delivery of goods for consumption within the delivery States but there was actual consumption of goods in those States: (ii) the assessment must be treated as an indivisible one and if a part of the assessment was illegal	 the entire assessment must be deemed to be infected and treated as invalid. HELD: Allowing the appeal	 (i) The part of the turnover which related to sales from January 26	 1960 to March 31. 1960 was not liable to sales tax and the levy of sales tax from the appellant to this extent was illegal. It was rightly contended that the appellant did not carry the burden of showing that there was not only delivery of goods for consumption within the States but that the goods were actually consumed in those States. [749 C] India Copper Corporation Ltd. vs The State of Bihar	 12 S.T.C. 56 relied upon. 744 (ii) In the present case though there was a single order of assessment for the period from April 1	 1949 to March 31	 1950	 the assessment could be split up and dissected and the items of sales separated and taxed for different periods. It was possible to ascertain the turnover of the appellant for the pre Constitution and post Constitution periods from the figures furnished in the plaint by the appellant himself. It was	 therefore. open to the Court in these circumstances to sever the illegal part of the assessment and give a declaration with regard to the illegal part alone instead of1 declaring the entire assessment void. [752 B] Case law referred to.