At the battle of Hunain God’s Messenger sent an army to Autas, and they met an enemy and fought with them. . Having prevailed over them and taken captives the Prophet’s companions seemed to hold back from having intercourse with them because of their husbands among the polytheists. Then God most high sent down regarding that, “And women already married, except those whom your right hands possess” (Al-Qur’an 4:24). That means that they were lawful for them when their ‘idda* period came to an end.
* The period which a widow or divorced woman must observe before remarriage. See Ch. 26.
‘Uqba b. al-Harith said he married a daughter of Ihab b. 'Aziz and a woman came and said she had suckled 'Uqba and the woman whom he had married, to which he replied, “I am not aware that you suckled me, and you did not inform me.” So he sent to the family of Abu Ihab and asked them, and when they told him that they did not know whether she had suckled their daughter he rode to the Prophet in Medina and asked him. God’s Messenger said, “How can you hesitate when you have been told?” ‘Uqba therefore separated from her and she married another husband.
Abu Huraira said that God’s Messenger forbade that a woman should be married to one who had married her paternal aunt, or a paternal aunt to one who had married her brother’s daughter, or a woman to one who had married her maternal aunt, or a maternal aunt to one who had married her sister's daughter. A younger sister must not be married to one who has married an elder sister, nor an elder sister to one who has married a younger sister.
Tirmidhi, Abu Dawud, Darimi and Nasa’i transmitted it, Nasa’i’s version ending with “her sister’s daughter.”
She said that the Prophet visited her when a man was with her and he seemed to disapprove of that. She told him that he was her brother and he replied, “Consider* who your brothers are, for fosterage is that consequent on hunger” (Fosterage applies only to infants and not to children who are able to take solid food).
* The verb is in the plural, indicating that this is a general instruction and not simply a reply to A’isha.
