Prohibition through breastfeeding is limited to the wet nurse and her descendants only

The questioner : Therefore, the questioner asks: I have a brother, and naturally his question is a bit of a digression, but he says he is traveling. He says: My brother was breastfed by a woman, and the son of that woman was breastfed by my mother. Is it permissible for me to marry the sister of the boy who was breastfed by my mother? The reverse of that.

The Shaykh : Yes, or the reverse of that. We say there is no harm; it is permissible for you to marry your brother’s sister through breastfeeding, do you understand? Because there is no kinship between you and her. Here is a rule that students of knowledge should know: breastfeeding does not extend to the relatives of the breastfed person except his descendants. For example, if a girl’s father, brother, and uncles were breastfed, they have no connection to the breastfeeding. Rather, breastfeeding extends only to the breastfed person himself and his descendants. As for his brothers, father, and mother, the effect of breastfeeding does not extend to them.

The questioner : And those who are younger than this child, are they children?

The Shaykh : Whether the children are older than him or younger than him, they may marry their sister if she was breastfed.

The questioner : The one who elevates himself by...

The Shaykh : The one who was satisfied with himself, it is known, because he cannot marry his sister. Yes.

The presenter : May Allah reward you with good, O 'Umar. Thank you.