Nikah with One’s Brother’s Milk Sister

Question

Qamaruddin’s paternal cousin (the daughter of his paternal uncle) drank milk together with him; after that the cousin was married into someone’s household, and a daughter was born to her. Now can Qamaruddin’s elder brother Laluddin marry this girl or not? Can there be any degree of milk kinship between them as well? Kindly inform us of the answer in detail.

Answer

Nikah with the milk niece (the daughter of the milk sister) of one’s full brother is valid and permissible according to the Shari‘a. Therefore Laluddin’s marriage to the daughter of Qamaruddin’s milk sister is permissible according to the Shari‘a — provided the cousin did not drink the milk of Laluddin’s mother, but rather drank the milk of some unrelated woman together with…

Source: Fatawa Mahmudiyya

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