Umm Habiba, the wife of Allah's Apostle (ﷺ), reported that she said to Allah's Messenger (ﷺ):Messenger of Allah, marry my sister 'Azza, whereupon Allah's Messenger (ﷺ) said: Do you like it? She said: Yes, Messenger of Allah, I am not the exclusive wife of yours, and I wish that the person who joins me in good should be my sister. Thereupon Allah's Messenger (ﷺ) said: That is not lawful for me. I said: Messenger of Allah, we discussed that You intend to marry Durrah bint Abu Salama. He (the Holy Prophet) said: You mean the daughter of Abu Salama? She said: Yes, whereupon Allah's Messenger (may. peace be upon him) said: Even if she were not the step-daughter of mine, brought up under my guardianship, she would not have been lawful for me, for she is the daughter of my foster-brother. Thuwaiba gave me suck and to Abu Salama (also), so do not offer to me your daughters and sisters.
وَحَدَّثَنَا مُحَمَّدُ بْنُ رُمْحِ بْنِ الْمُهَاجِرِ، أَخْبَرَنَا اللَّيْثُ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، أَنَّحَدَّثَهُ أَنَّ زَيْنَبَ بِنْتَ أَبِي سَلَمَةَ حَدَّثَتْهُ أَنَّ أُمَّ حَبِيبَةَ زَوْجَ النَّبِيِّ صلى الله عليه وسلم حَدَّثَتْهَا أَنَّهَا قَالَتْ لِرَسُولِ اللَّهِ صلى الله عليه وسلم يَا رَسُولَ اللَّهِ انْكِحْ أُخْتِي عَزَّةَ . فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " أَتُحِبِّينَ ذَلِكِ " . فَقَالَتْ نَعَمْ يَا رَسُولَ اللَّهِ لَسْتُ لَكَ بِمُخْلِيَةٍ وَأَحَبُّ مَنْ شَرِكَنِي فِي خَيْرٍ أُخْتِي . فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " فَإِنَّ ذَلِكِ لاَ يَحِلُّ لِي " . قَالَتْ فَقُلْتُ يَا رَسُولَ اللَّهِ فَإِنَّا نَتَحَدَّثُ أَنَّكَ تُرِيدُ أَنْ تَنْكِحَ دُرَّةَ بِنْتَ أَبِي سَلَمَةَ . قَالَ " بِنْتَ أَبِي سَلَمَةَ " . قَالَتْ نَعَمْ . قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لَوْ أَنَّهَا لَمْ تَكُنْ رَبِيبَتِي فِي حَجْرِي مَا حَلَّتْ لِي إِنَّهَا ابْنَةُ أَخِي مِنَ الرَّضَاعَةِ أَرْضَعَتْنِي وَأَبَا سَلَمَةَ ثُوَيْبَةُ فَلاَ تَعْرِضْنَ عَلَىَّ بَنَاتِكُنَّ وَلاَ أَخَوَاتِكُنَّ " .
Muslim
The Book of Suckling • Hadith 21