Is it permissible for a person to marry the sister of his foster-sister—who is the daughter of her mother's co-wife from the same husband—after he was suckled by her mother?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
If a person is suckled by a woman with a forbidden suckling (five sucklings within two years), then this woman's paternal sister becomes forbidden to him, because she becomes his maternal aunt through suckling. This is based on the Prophet's (peace and blessings be upon him) saying: "What is forbidden by lineage is also forbidden by 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/130862
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 130862
- 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