Section 3(a)

(a) the expressions “custom ” and “usage ” signify any rule which, having been continuously and uniformly observed for a long time, has obtained the force of law among Hindus in any local area, tribe, community, group or family: Provided that the rule is certain and not unreasonab le or opposed to public policy: and Provided further that, in the case of a rule applicable only to a family, it has not b een discontinued by the family;