Marriage of step-siblings
Zayd has married Fāṭimah. Zayd has a son Muḥammad from a previous marriage. Thus, Fāṭimah is Muḥammad’s step mother. Fāṭimah has a daughter Zaynab from her previous marriage. Thus, Zayd is Zaynab’s step father. Is it permissible for Muḥammad and Zaynab to marry each other?