The Ruling on Nikah with the Stepmother’s Sister

Question

Zayd has two wives, Zaynab and Kulthum. From the first wife, Zaynab, he has a son, Khalid. The second wife, Kulthum, has a sister, Ruqayya. It should be clarified that Kulthum and Ruqayya are also half-sisters to each other. Can Khalid’s nikah be contracted with Ruqayya or not? The girl, moreover, is the stepmother’s half-sister.

Answer

Nikah with a maternal aunt is haram, but a maternal aunt is one who is the sister of one’s real mother. The sister of the stepmother — the father’s second wife — is not a maternal aunt, and nikah with her is not haram.

Source: Fatawa Mahmudiyya

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