Is the wife's elder sister permanently forbidden to her sister's husband if she breastfed the wife in her infancy?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
If your wife's elder sister breastfed your wife five full feedings while she was within the first two years of life, then she is considered her mother through breastfeeding. Accordingly, your wife becomes permanently forbidden to you upon marriage, due to the Almighty's saying: "and your wives' mothers," and due to the Prophet's (peace be upon him) saying: "What is forbidden by lineage is forbidden by breastfeeding."
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/62016
Where this answer came from
- Source platform
- Ftawy
- Original fatwa ID
- 62016
- 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