Is it permissible for a young man to marry the sister of a man who is his brother through رضاعة (radha'a, i.e., suckling/nursing)?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
This marriage is permissible because the suckling of the suitor's brother is limited to him and does not extend to his (other) brother. What is prohibited by suckling is what is prohibited by lineage. The Messenger of Allah, peace and blessings be upon him, said: "What is prohibited by suckling is what is prohibited by lineage." And the brother of a brother by lineage is not forbidden to marry the sister of his brother by lineage. So, it is even more fitting that the sister by suckling should not be 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/54197
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 54197
- 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