ENOfficial
It was narrated that Abu `Awn said: I heard Abu Salih say: ‘Ali (رضي الله عنه) said: I mentioned the daughter of Hamzah (as a potential spouse) to the Messenger of Allah (ﷺ) and he said: `She is the daughter of my brother through breastfeeding.`
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي عَوْنٍ، قَالَ سَمِعْتُ أَبَا صَالِحٍ، قَالَ قَالَ عَلِيٌّ ذَكَرْتُ ابْنَةَ حَمْزَةَ لِرَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ إِنَّهَا ابْنَةُ أَخِي مِنْ الرَّضَاعَةِ.
sunnah.com