Is it permissible for a person to marry his sister’s daughter through breastfeeding?

Question:
May Allah reward you with the best reward for us and for the Muslims. The questioner, whose name is Min from Riyadh, says: Honorable Shaykh, I am asking about a matter concerning breastfeeding that has weighed heavily on my heart when I think about it or try to find a solution. The situation is that my mother (may Allah preserve her) breastfed a specific man along with my eldest sister more than once. In all instances, they nursed until they were completely full. Days passed, and years went by, and this man married another woman and had sons and daughters from her. The question is: Is it permissible for me to marry one of her daughters?

Answer:
If this man nursed from your mother more than five times, meaning five sucks of milk or more, he becomes your brother. It is not permissible for you to marry his daughters, because you would be their paternal uncle through breastfeeding. Yes.