حَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا الْأَعْمَشُ، عَنْ سَعْدِ بْنِ عُبَيْدَةَ، عَنْ أَبِي عَبْدِ الرَّحْمَنِ، عَنْ عَلِيٍّ
رَضِيَ اللَّهُ عَنْهُ قَالَ قُلْتُ: يَا رَسُولَ اللَّهِ مَا لِي أَرَاكَ تَنَوَّقُ فِي قُرَيْشٍ وَتَدَعُنَا قَالَ عِنْدَكَ شَيْءٌ قُلْتُ بِنْتُ حَمْزَةَ قَالَ هِيَ بِنْتُ أَخِي مِنْ الرَّضَاعَةِ
I said: O Messenger of Allah (sallallahu alayhi wa sallam), why do I see you choose a wife from among Quraish and you ignore us? He said: ‘Have you anyone to suggest?’ I said: Yes, the daughter of Hamzah. The Messenger of Allah (sallallahu alayhi wa sallam) said: “She is the daughter of my brother through breastfeeding.”
Musnad Ahmad 869, Book 5, Musnad 'Ali Ibn Abi Talib, Hadith 341. 1 min read