Under Article 254(2) of the Constitution, where a State law on a Concurrent List subject is repugnant to an earlier law of Parliament, the State law prevails in that State if it has received -

Article 254(1) provides that if any provision of a law made by the State Legislature is repugnant to any provision of a law made by Parliament on a matter in the Concurrent List, the Union law prevails and the State law is void to the extent of the repugnancy. Article 254(2) creates an exception: where a State law on a Concurrent subject, having been reserved for the consideration of the President, has received his assent, it prevails in that State notwithstanding the repugnancy to an earlier Union law. The proviso to Article 254(2) preserves Parliament's power to enact a law adding to, amending, varying or repealing the State law.