Under the Hindu Marriage Act, 1955, any pre-existing Hindu law text, rule, or custom:

Section 4 of the Hindu Marriage Act begins "save as otherwise expressly provided", and displaces earlier Hindu texts and customs on matters the Act covers. Express savings, including customary rites under Section 7 and customary divorce under Section 29(2), remain effective; other prior laws are displaced only so far as inconsistent under Section 4(b).