Is it permissible for my brother to marry the sister of my cousin, who was nursed with my brother?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
If the brother has been nursed by the girl's mother or by another woman who nursed her, then it is not permissible for him to marry her because she is his sister through suckling. This is based on the saying of the Prophet, peace be upon him: "What is forbidden by lineage is also forbidden by suckling," and the verse from the Quran: "and your sisters through suckling." However, if he was not nursed by her or by someone who nursed her, then she is not forbidden to him.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/71058
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 71058
- 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