Is my female cousin considered my sister through breastfeeding if my full sister breastfed from my mother along with her, and is it permissible for me to marry her according to Islamic law?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
The sister who asked the question was nursed by the mother of her maternal aunt's daughter, so she is her sister by suckling, and thus she is forbidden to all who were nursed by her maternal aunt. As for the questioner, she was not nursed by the mother of her maternal aunt's daughter, so she is not her sister, and there is no harm in her marrying her maternal aunt's daughter.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/192834
Where this answer came from
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- Ftawy
- Original fatwa ID
- 192834
- 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