Sunan Abi Dawud 25646
In-book no 5142حَدَّثَنَا مُحَمَّدُ بْنُ عِيسَى، حَدَّثَنَا الْحَارِثُ بْنُ مُرَّةَ، حَدَّثَنَا كُلَيْبُ بْنُ مَنْفَعَةَ، عَنْ جَدِّهِ، أَنَّهُ أَتَى النَّبِيَّ صلى الله عليه وسلم فَقَالَ يَا رَسُولَ اللَّهِ مَنْ أَبَرُّ قَالَ " أُمَّكَ وَأَبَاكَ وَأُخْتَكَ وَأَخَاكَ وَمَوْلاَكَ الَّذِي يَلِي ذَاكَ حَقٌّ وَاجِبٌ وَرَحِمٌ مَوْصُولَةٌ " .
Kulaib b. Manfa'ah said that his grandfather told then he went to the Prophet (ﷺ) and said: Messenger of Allah! to whom should I show kindness? He said: Your mother, your sister, your brother and the slave whom you set free and who is your relative, a due binding (on you), and a tie of relationship which should be joined.