Is it permissible to marry the sister of one's sister through fosterage?

A man is permitted to marry the sister of his suckling sister if his sister suckled from his mother, or if she suckled with him from a foreign woman, because the prohibition is restricted solely to the suckling sister. However, if the man suckled from the girl's mother, he becomes a brother to that girl and all her sisters, and therefore it is not permissible for him to marry any of them.