(3) باب إِنَّمَا الْوَلاَءُ لِمَنْ أَعْتَقَ
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.
Reference: Sahih Muslim 1505
In-book reference: Book 20, Hadith 18
USC-MSA web (English) reference(deprecated numbering scheme): Book 9, Hadith 3595