Permissibility of a man marrying a girl though his father has married her mother while she was still breastfeeding her
Q: I would like to ask you about the ruling on my marriage to a woman whose mother was married to my father. My father consummated his marriage when my wife was 3 months old. Her mother breastfed her for one year and a half after getting married. The mother weaned the girl upon becoming pregnant from my father. My wife remained at my father's house until she was 7 years old, after which her father took her to live with him. Later I proposed to the girl and married her, but I have not consummated the marriage until now. Is she a lawful wife for me? Bear in mind that
my father consummated his marriage to her mother when she was suckling, and her mother continued to breastfeed her for a year and a half
after getting married to my father. Please reply, and may Allah reward you. Peace be upon you.
You are not a Mahram (unmarriageable relative) to this woman, since the manner and timing of her breastfeeding (Part No. 21; Page No. 69) does not make your father her milk-father. Based upon this, it is permissible for you to marry her.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.