Under the proviso to Article 3, a Bill altering the area, boundary or name of an existing State may be introduced in Parliament only:

1. The proviso to Article 3 prescribes a two-fold safeguard for such a Bill. 2. First, the Bill must be introduced only on the recommendation of the President. 3. Second, the President must refer the Bill to the Legislature of the State concerned for expressing its views within a specified period. 4. The State Legislature's view is, however, NOT binding on Parliament; State ratification and Inter-State Council clearance are not required. _Source: Constitution of India (Bare Act, updated to 105th Amendment Act 2021), Govt. of India Legislative Dept., Article 3 proviso_