Marrying sister of uncle's wife

2-3-2002 | IslamWeb

Question:

Is it permissible to marry the sister-in-law of my own uncle or my father's own brother, i.e. to marry the own sister of my father's own brother's wife. Please answer my question as quickly as possible in the light of Qur'an and Sunnah.

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Answer:

Praise be to Allah, the Lord of the World; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.

Merely being' this woman, a sister of your uncle's wife does not cause prohibition to marry her. However, if there is any other reason such as suckling, then marrying her becomes Haram.
Allah knows best.