Breast-feeding Once Does Not Engender Prohibition

Question :

I wish to marry my paternal uncle's daughter, but before I proposed I to her, her sister said that she had breast-fed me, but she does not know how many times, although my mother said that she only remembers her breast-feeding me once and she does not remember any other occasion. After confirming from my mother that she only fed me once, I proposed to my uncle's daughter and fixed a date for the wedding. Now I am not sure whether to complete the marriage, since it has not been confirmed that she breast-fed me five times, or whether I should divorce her before having sexual relations with her.

Answer:

Do not divorce her, since the breast-feeding which would prohibit marriage which is five times, each feeding involving the nipple being held onto and sucked and then released has not been confirmed. If such breast-feeding was confirmed, this wife would be your maternal aunt the sister of your uncle through fostering. But since it has not been confirmed that she breast-fed you more than once, she is not forbidden, so hold onto your wife and fear Allah, and avoid doubts and skepticism, because essentially it is permissible, and there is no evidence that it is otherwise.

Source:
Ibn Jibreen
Fatawa Islamiyah, Vol. 5 Pages 227-228