it becomes mixed with other unrelated women. If his lineage is denied from both, such as if she gives birth to him less than six months after intercourse with both of them (38), or after more than four years, or less than six months after intercourse with one and more than four years after intercourse with the other, the nursing child is also denied from both. If the nursing child is a girl, she is prohibited to both through the prohibition of affinity, and her children are also prohibited to both, because she is the daughter of a woman both have had intercourse with (39), thus she is their step-daughter.

Section: The prohibition does not spread through anything other than human milk under any circumstances. If two people are nursed by the milk of an animal, they do not become siblings, according to the opinion of the general body of scholars, including al-Shafi'i, Ibn al-Qasim, Abu Thawr, and the People of Opinion (Ashab al-Ra'y). If they are nursed by a man, they do not become siblings, nor does the prohibition spread between him and them, according to the opinion of the majority. Al-Karabisi (40) said: Prohibition attaches to it because it is human milk, resembling the milk of a woman (41). It was narrated from some of the predecessors (al-Salaf) that if they are nursed by the milk of an animal, they become siblings. This is not correct because this (42) does not entail the prohibition of motherhood, so it does not establish the prohibition of siblinghood, as siblinghood is a derivative of motherhood. Similarly, it does not entail the prohibition of fatherhood for the same reason, and because this milk was not created for the nourishment of the newborn, thus (43) prohibition does not attach to it, like all other food. If milk appears in a hermaphrodite (khuntha mushkil), it does not establish prohibition because it is not established that he is a woman, so prohibition is not established in the presence of doubt. Ibn Hamid said: The matter is held in abeyance until the state of the hermaphrodite becomes clear.