Khairul Balough is an Arabic term, means option of puberty in Islamic Jurisprudence. It is a right given to minor wife to annual the marriage bond, arranged by her guardian / anyone, on attaining majority.
Option of puberty under Mohammedan law is only a right given to minor wife to avoid the marriage contract, entered into by her guardian, on becomingsui juris. ….. [Mst Daulan vs. Dosa (1956) 8 DLR (wp) 77]