Is it permissible for the eldest son of a woman to marry the younger sister of her nephew, whom the mother breastfed along with her own son, and are they considered siblings?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
All of the foster mother's children are permitted to marry their maternal uncles' daughters. They are also permitted to marry her (the foster mother's) daughters, except for the one who was nursed by her, because he has become her son through suckling, and all of her (the foster mother's) children are his siblings through suckling.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/53951
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 53951
- Added here
- . This is when the answer was added to El Fatwa, not the fatwa's date.
- Text
- Summary from Ftawy's records, reviewed by El Fatwa's sharia committee.
- Read the full ruling
- Read the full answer on Ftawy