كتاب العتق
20  
The Book of Emancipating Slaves
(3)
Chapter: Al-Wala' (Right of inheritance) belongs to the one who manumits the slave
(3)
باب إِنَّمَا الْوَلاَءُ لِمَنْ أَعْتَقَ
Sahih Muslim 1505

Abu Huraira (Allah be pleased with him) reported:

'A'isha (Allah be pleated with her) thought of buying a slave-girl and emancipating her, but her owners refused to (sell her but on the condition) that the right of inheritance would vest in them. She made a mention of that to Allah's Messenger (ﷺ). whereupon he said: Let this (condition) not stand in your way for the right of inheritance vests with one who emancipates.
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا خَالِدُ بْنُ مَخْلَدٍ، عَنْ سُلَيْمَانَ بْنِ بِلاَلٍ، حَدَّثَنِي سُهَيْلُ بْنُ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ أَرَادَتْ عَائِشَةُ أَنْ تَشْتَرِيَ، جَارِيَةً تُعْتِقُهَا فَأَبَى أَهْلُهَا إِلاَّ أَنْ يَكُونَ لَهُمُ الْوَلاَءُ فَذَكَرَتْ ذَلِكَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏ "‏ لاَ يَمْنَعُكِ ذَلِكِ فَإِنَّمَا الْوَلاَءُ لِمَنْ أَعْتَقَ ‏"‏ ‏.‏
Reference : Sahih Muslim 1505
In-book reference : Book 20, Hadith 18
USC-MSA web (English) reference : Book 9, Hadith 3595
  (deprecated numbering scheme)