Two women who are not blood sisters but are maternal or paternal cousins are permitted to marry one man at the same time. In the presence of such a cousin, another cousin can also marry the same man. The same rule applies to a very distant maternal or paternal aunt. That is, the niece and this distant maternal or paternal aunt can marry the same man at one time.
All the relations which become haram on account of lineage also become haram on account of breast-feeding. In other words, if a girl is breast-fed by a particular woman, then this girl cannot marry the latter’s husband because he will now be regarded as her father. A girl who has been breast-fed by a particular woman cannot marry a boy who has been breast-fed by the same woman. Nor can this girl marry the children of this woman because she is also regarded as a child of this woman. All the maternal and paternal uncles and maternal and paternal nephews who become related due to this breast-feeding also become haram on this girl.
If two girls have been breast-fed by one woman, they cannot marry the same man at one time. In other words, whatever has been explained previously, will also apply to relations based on breast-feeding.
A man committed adultery with a certain woman. Now it will not be permissible for her mother or her children to marry this man.
Due to the passions of youth, a woman touched a man with evil intentions. It will now not be permissible for her mother or her children to marry this man. Similarly, if a man touches a woman with evil intentions, her mother and her children will be haram on him.
In the middle of the night, a man decided to awaken his wife. However, he mistakenly touched his daughter or his mother-in-law. Thinking them to be his wife, he touched them with the passions of youth. Now, this man will become haram on his wife forever. There is no way in which she can become permissible for him. It will be necessary for him to divorce his wife.