What is the effect of a Muslim marriage where the age of the bride is below the age of puberty but…

Under Muslim law a marriage of a minor contracted by the guardian is valid, but the minor has the "option of puberty" (khiyar-ul-bulugh) to repudiate it on attaining puberty, so it is voidable at the minor's option. Section 2(vii) of the Dissolution of Muslim Marriages Act, 1939 lets a wife married by her guardian before fifteen repudiate the marriage before eighteen if it has not been consummated. It is not void, irregular or unlawful.