حَدَّثَنَا عَبْدُ الرَّحْمَنِ، عَنْ سُفْيَانَ، عَنِ الْأَعْمَشِ، 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 أَنْ تَزَوَّجَ إِلَيْنَا قَالَ وَعِنْدَكَ شَيْءٌ قَالَ قُلْتُ ابْنَةُ حَمْزَةَ قَالَ إِنَّهَا ابْنَةُ أَخِي مِنْ الرَّضَاعَةِ
I said: O Messenger of Allah, why do I see you marrying from Quraish and you do not marry from among us? He said: “Do you have someone?” I said: The daughter of Hamzah. He said: ‘She is the daughter of my brother through breastfeeding.’
Musnad Ahmad 986, Book 5, Musnad 'Ali Ibn Abi Talib, Hadith 458. 1 min read