Is it permissible for a man who was breastfed by his maternal uncle's wife along with one of her daughters to marry this daughter's other sisters? And is it permissible for his brothers to marry the girl who was breastfed with him or her sisters?

It is not permissible for the suckled person to marry the daughters of the woman who suckled him, nor the daughters of her husband; because he has become a son to them and a brother to all their children. As for the siblings of the suckled person, it is permissible for them to marry the daughters of this man if they were not suckled by them, for the prohibition is specific only to the suckled person.