that the Messenger of Allah said: 'Breast-feeding makes unlawful (for marriages) the same things that blood tie make unlawful.”  

قَالَ رَسُولُ اللَّهِ ﷺ يَحْرُمُ مِنَ الرَّضَاعِ مَا يَحْرُمُ مِنَ النَّسَبِ  

that the Messenger of was offered the daughter of Hamzah bin 'Abdul-Muttalib in marriage, and he said: “She is the daughter of my brother through breastfeeding, and breastfeeding makes unlawful (for marriage) the same things that blood ties make unlawful.”  

أَنَّ رَسُولَ اللَّهِ ﷺ أُرِيدَ عَلَى بِنْتِ حَمْزَةَ بْنِ عَبْدِ الْمُطَّلِبِ فَقَالَ إِنَّهَا ابْنَةُ أَخِي مِنَ الرَّضَاعَةِ وَإِنَّهُ يَحْرُمُ مِنَ الرَّضَاعَةِ مَا يَحْرُمُ مِنَ النَّسَبِ  

“Marry my sister 'Azzah.” The Messenger of Allah said: 'Would you like that? “She said: “Yes, O Messenger of Allah. I am not the only one living with you and the one who most deserves to share good thingswith me is my sister.” The Messenger of Allah said: “But that is not permissible for me.” She said: “But we throught that you wanted to marry Durrah bint Abi Salmah.” The Messenger of Allah said: The daughter of Umm Salamah?” She said: “Yes” The Messenger of Allah said: “Even if she were not my step-daughter who is under my care, she would not be permissible for me, because she is the daughter of my brother through breastfeeding. Tuwaibah breastfed both her father and I. So do not offer your sisters and daughters to me for marriage.”  

أَنَّهَا قَالَتْ لِرَسُولِ اللَّهِ ﷺ انْكِحْ أُخْتِي عَزَّةَ قَالَ رَسُولُ اللَّهِ ﷺ أَتُحِبِّينَ ذَلِكَ قَالَتْ نَعَمْ يَا رَسُولَ اللَّهِ فَلَسْتُ لَكَ بِمُخْلِيَةٍ وَأَحَقُّ مَنْ شَرِكَنِي فِي خَيْرٍ أُخْتِي قَالَ رَسُولُ اللَّهِ ﷺ فَإِنَّ ذَلِكَ لاَ يَحِلُّ لِي قَالَتْ فَإِنَّا نَتَحَدَّثُ أَنَّكَ تُرِيدُ أَنْ تَنْكِحَ دُرَّةَ بِنْتَ أَبِي سَلَمَةَ فَقَالَ بِنْتَ أُمِّ سَلَمَةَ قَالَتْ نَعَمْ قَالَ رَسُولُ اللَّهِ ﷺ فَإِنَّهَا لَوْ لَمْ تَكُنْ رَبِيبَتِي فِي حِجْرِي مَا حَلَّتْ لِي إِنَّهَا ابْنَةُ أَخِي مِنَ الرَّضَاعَةِ أَرْضَعَتْنِي وَأَبَاهَا ثُوَيْبَةُ فَلاَ تَعْرِضْنَ عَلَىَّ أَخَوَاتِكُنَّ وَلاَ بَنَاتِكُنَّ حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نُمَيْرٍ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ زَيْنَبَ بِنْتِ أُمِّ سَلَمَةَ عَنْ أُمِّ حَبِيبَةَ عَنِ النَّبِيِّ ﷺ نَحْوَهُ