Prohibited Breastfeeding

The listener, Umar Muhammad Abidin, residing in the suburbs of Makkah al-Mukarramah, sent a question saying: My younger brother nursed from my aunt’s daughter, along with her eldest daughter, for one breastfeeding session. I want to marry her fourth daughter; is that permissible or not? We know for certain that our mothers confirm it was only one breastfeeding session, but they do not know if it was a full feed. Also, is it permissible for the aforementioned brother to marry her youngest daughter? May Allah reward you with good.
Answer: One breastfeeding session does not prohibit marriage, nor does it establish the prohibition of breastfeeding kinship. Five breastfeeding sessions are required. Therefore, he may marry her, and you may marry her or one of her sisters. This is not the established practice. Even if it were determined that she breastfed him five times, the prohibition would apply specifically to him. As for you, there is no harm in marrying her sister. The prohibition only occurs if she breastfed him, making him her brother. If his mother breastfed him five times, he becomes her brother. As for you, you are not her brother because you were not breastfed by her.
In conclusion: You may marry one of her daughters because you are not a nursling of theirs, and you are not their brother. As for him, if it is established that she breastfed him five times, he becomes her son specifically. Yes.
The presenter: May Allah reward you with good.