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Is it permissible for a young man to marry a girl if the girl’s mother was breastfed by the young man’s maternal aunt (his father’s wife)?

1 min readAlso available in العربية

If the milk in your father's wife was caused by your father's intercourse, and the mother of the girl you wish to marry was suckled by your father's wife five times or more, then this woman becomes your sister through suckling. Her daughter, whom you wish to marry, then becomes your sister's daughter through suckling, and you become her maternal uncle. Therefore, it is unlawful for you to marry her, based on the Prophet's (peace and blessings be upon him) saying: "What is unlawful by lineage is unlawful by suckling."

Summarized from the full answer at Ftawy · reviewed Sep 2, 2026

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