Is it permissible to marry the sister of one's sister through fosterage?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
A man is permitted to marry the sister of his suckling sister if his sister suckled from his mother, or if she suckled with him from a foreign woman, because the prohibition is restricted solely to the suckling sister. However, if the man suckled from the girl's mother, he becomes a brother to that girl and all her sisters, and therefore it is not permissible for him to marry any of them.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/6572
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 6572
- 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