Answered by Shaykh Rami Nsour
Question: Assalamualaikum wa Rahmatullah wa Barakatuhu
My father was adopted and when he was about 7 yrs old his mother (who adopted him) conceived and she gave my father some of her breast milk with a spoon.
Does this make him her mahram? Will that also mean my uncle is now my mahram?
Answer: According to the verse in the Quran in Sura Baqara (2:233), “Mothers shall nurse their children for two complete years.” The years here refer to lunar years. From this verse the scholars have deduced that two years is maximum time that nursing can cause the mahram (non-marriageable) relationship.