Question 1554) - You mentioned that whoever is Haram to marry through lineage is Haram to marry through breastfeeding, with certain exceptions. What are these exceptions?

A: The following are exceptions:
1. One may marry the mother of one's sister through breastfeeding, but not the mother of one's biological sister. 2. One may marry the sister of one's son through breastfeeding, but not through lineage. 3. One may marry the mother of the paternal uncle and paternal aunt through breastfeeding, but not through lineage.

~ al-Quduri ~