Will the foster mother's daughter become a sister to her sister's son through fosterage if her mother breastfed him two or three times 40 years ago, and is their marriage, which took place 22 years ago, valid?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
If there is doubt about the existence of breastfeeding or the number of prohibited breastfeedings, the prohibition is not established, because the default is its non-existence. The default is not removed merely by doubt. The prohibited breastfeeding consists of five breastfeedings within two years, according to the more preponderant opinion. Therefore, there is no objection to marrying her daughter to her sister's son.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/64491
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 64491
- 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