Is the paternal aunt's daughter considered a sister to my brother through rada'ah (milk-kinship), and thus a sister to the questioner, if she suckled from the questioner's mother more than five times?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
Lactation establishes the same prohibitions as lineage, for the Prophet, peace and blessings be upon him, said: "What is prohibited by lineage is prohibited by lactation." So, whoever suckles from a woman becomes a son to her and to her husband, the owner of the milk, and a brother to all her children. Therefore, if your maternal aunt's daughter suckled from your mother five full and satisfying breastfeeds or more, she has become your sister through lactation.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/124292
Where this answer came from
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- Ftawy
- Original fatwa ID
- 124292
- 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