Article 11 of the Indian Constitution

Parliament to regulate the right of citizenship by law.—Nothing in the foregoing provisions of this Part shall derogate from the power of Parliament to make any provision with respect to the acquisition and termination of citizenship and all other matters relating to citizenship.

Article 9 of the Indian Constitution

Persons voluntarily acquiring citizenship of a foreign State not to be citizens.— No person shall be a citizen of India by virtue of article 5, or be deemed to be a citizen of India by virtue of article 6 or article 8, if he has voluntarily acquired the citizenship of any foreign State.

Article 8 of the Indian Constitution

Rights of citizenship of certain persons of Indian origin residing outside India.—Notwithstanding anything in article 5, any person who or either of whose parents or any of whose grand-parents was born in India as defined in the Government of India Act, 1935 (as originally enacted), and who is ordinarily residing in any country outside India … Read more

Article 6 of the Indian Constitution

Rights of citizenship of certain persons who have migrated to India from Pakistan.—Notwithstanding anything in article 5, a person who has migrated to the territory of India from the territory now included in Pakistan shall be deemed to be a citizen of India at the commencement of this Constitution if—(a) he or either of his … Read more