If He Was Breast-fed by a Man's Wife, His Daughters From the Other are Forbidden to Him
Question :
There is a man who has two daughters from two wives. I was breast-fed by one of his wives. Is it permissible for me to marry the other daughter?
Answer:
If you were breast-fed five times or more during the first two years of life by either of this man's two wives, it is not permissible for you to marry any of his daughters. It does not matter whether they are from this wife who suckled you, or from another, because you are a brother to them through breast-feeding. Allah, Most High has said:
"Forbidden to you (for marriage) are: your mothers." Up to His Words:
"your foster milk suckling sisters."
It must be noted that what constitutes one breast-feeding is that the child takes the breast and sucks milk from it, then leaves it.
in order to take breath or to transfer etc. Then if he returns (and sucks again), it is a second breast-feeding, and so on.
However, if the breast-feeding occurred less than five times, or it took place after the first two years of life, it is permissible for you to marry any of his daughters.
Source:
The Permanent Committee
Fatawa Islamiyah, Vol. 6 Page 152
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