In which of the following cases, the Hindu Marriage Act, 1955 is not applicable?

Under Section 2(2) of the Hindu Marriage Act, 1955, nothing contained in the Act applies to the members of any Scheduled Tribe (as defined under Article 366(25) of the Constitution) unless the Central Government, by notification in the Official Gazette, otherwise directs. Under Section 2(1), the Act applies to Hindus, Buddhists, Jains, and Sikhs by religion, including illegitimate children of Hindu parents and converts or reconverts to any of these religions.