Ruling on marrying one's father's brother through breastfeeding

Question:
Is it permissible for me to marry my father's brother through breastfeeding?

Answer:
This is your uncle. You want to marry your uncle? Your father's brother through breastfeeding is like his brother by blood, and the uncle is forbidden to marry. It is not permissible to marry him. As for the son of the uncle, there is nothing wrong with it. Your uncle, your grandfather's uncle, and your father's uncle are all uncles to you. Your uncle, your father's uncle, and your grandfather's uncle, whether by blood or by breastfeeding, are all forbidden to marry. As for the son of the uncle, there is nothing wrong with it.