Is it permissible for one who was breastfed by his maternal grandmother to marry the daughters of his maternal aunts or maternal uncles?

If a child is nursed by his maternal grandmother five times or more within the first two years of his life, he becomes a brother to his maternal uncles and aunts, an uncle to the children of his maternal uncles, and a maternal uncle to the children of his maternal aunts. Consequently, it is not permissible for him to marry the daughters of his maternal uncles or the daughters of his maternal aunts, because he has become their paternal or maternal uncle through suckling.