(A) Constitution of India , Art.245(2)— Law having extra territorial operation - Competence of Parliament to enact - Law enacted to be valid must have nexus with India. The general principle underlying the sovereignty of States is that laws made by one State cannot have operation in another State. A law which has extra territorial operation cannot directly be enforced in another State but such a law is not invalid and saved by Article 245(2) of the Constitution of India. Article 245(2) provides that no law made by Parliament shall be deemed to be invalid on the ground that it would have extra territorial operation. But this does not mean that law having extra territorial operation can be enacted which has no nexus at all with India. Unless such contingency exists, the Parliament shall be incompetent to make a law having extra-territorial operation.(Para 13) (B) Hindu Marriage Act (25 of 1955) , S.1(2)— Territorial application - Act applies to Hindus residing out of India - But having domicile in India - Requirement of domicile in India saves its extra territorial application. From Section 1(2) of the Act, it is evident that the Act extends to the Hindus of whole of India except the State of Jammu and Kashmir and also applies to Hindus ....