O uncle, O uncle. ‘Ali took her by the hand and said to Fatimah ؓ , Here is your cousin, look after her. ‘Ali, Zaid and Jaʿfar disputed concerning her. Ali said: I took her and she is the daughter of my paternal uncle. Jaʿfar said: She is the daughter of my paternal uncle and her maternal aunt is married to me, Zaid said:She is the daughter of my brother. The Messenger of Allah ﷺ ruled that she be given to her maternal aunt and said: ʿThe maternal aunt is like the mother.ʿ Then he said to ‘Ali: ʿYou are of me and I am of you.” And he said to Ja’far: ʿYou resemble me in appearance and attitude.” And he said to Zaid: ʿYou are our brother and our freed slave.ʿ ‘Ali ؓ said to him. O Messenger of Allah ﷺ, why donʿt you marry the daughter of Hamzah? He said: ʿShe is the daughter of my brother through breastfeeding.ʿ (Using translation from Aḥmad 931)
لَمَّا صَدَرْنَا مِنْ مَكَّةَ إِذَا ابْنَةُ حَمْزَةَ تُنَادِي يَا عَمُّ يَا عَمُّ فَتَنَاوَلَهَا عَلِيٌّ فَأَخَذَهَا فَقَالَ لِفَاطِمَةَ دُونَكِ ابْنَةَ عَمِّكِ فَحَمَلَهَا فَاخْتَصَمَ فِيهَا عَلِيٌّ وَجَعْفَرٌ وَزِيدٌ فَقَالَ عَلِيٌّ أَنَا أَحَقُّ بِهَا وَهِيَ ابْنَةُ عَمِّيَ وَقَالَ جَعْفَرٌ «ابْنَةُ عَمِّي وَخَالَتُهَا تَحْتِي» وَقَالَ زَيْدٌ «بِنْتُ أَخِي» فَقَضَى بِهَا رَسُولُ اللهِ ﷺ لِخَالَتِهَا وَقَالَ «الْخَالَةُ بِمَنْزِلَةِ الْأُمِّ» وَقَالَ لِعَلِيٍّ «أَنْتَ مِنِّي وَأَنَا مِنْكَ» وَقَالَ لِجَعْفَرٍ «أَشْبَهْتَ خَلْقِي وَخُلُقِي» وَقَالَ لِزَيْدٍ يَا زَيْدُ «أَنْتَ أَخُونَا وَمَوْلَانَا»