Sahih Muslim Book - 17, Hadith - 3583

وَحَدَّثَنَا هَدَّابُ بْنُ خَالِدٍ حَدَّثَنَا هَمَّامٌ حَدَّثَنَا قَتَادَةُ عَنْ جَابِرِ بْنِ زَيْدٍ عَنِ ابْنِ عَبَّاسٍ أَنَّ النَّبِىَّ -صلى الله عليه وسلم- أُرِيدَ عَلَى ابْنَةِ حَمْزَةَ فَقَالَ « إِنَّهَا لاَ تَحِلُّ لِى إِنَّهَا ابْنَةُ أَخِى مِنَ الرَّضَاعَةِ وَيَحْرُمُ مِنَ الرَّضَاعَةِ مَا يَحْرُمُ مِنَ الرَّحِمِ ».

It was narrated from Ibn 'Abbas that it was suggested that the Prophet (s.a.w) marry the daughter of Hamzah. He said: "She is not permissible for me (to marry), for she is the daughter of my brother through breastfeeding, and what becomes unlawful through breastfeeding is that which becomes unlawful through ties of kinship."