Article 13 establishes the constitutional rule that laws cannot validly operate to the extent that they conflict with the Fundamental Rights contained in Part III. It separately addresses pre-Constitution laws, laws made by the State after commencement of the Constitution, the meaning of "law" and "laws in force", and constitutional amendments under Article 368.
Article 13(1) - Existing laws
All laws in force in the territory of India immediately before the commencement of the Constitution, insofar as they are inconsistent with Part III, are void to the extent of that inconsistency.
Article 13(2) - State not to abridge Fundamental Rights
The State shall not make a law that takes away or abridges the rights conferred by Part III. A law made in contravention of this clause is void to the extent of the contravention.
Article 13(3)(a) - Meaning of "law"
For Article 13, "law" includes an Ordinance, order, bye-law, rule, regulation, notification, custom or usage having in India the force of law.
Article 13(3)(b) - Meaning of "laws in force"
"Laws in force" includes laws passed or made by a Legislature or other competent authority in India before commencement of the Constitution and not previously repealed, even if such a law or part of it was not then operating at all or in particular areas.
Article 13(4) - Constitutional amendments
Clause (4) states that nothing in Article 13 applies to an amendment of the Constitution made under Article 368.