(14) باب فِي بَيْعِ الْوَلاَءِ
Narrated Ibn 'Umar:
The Messenger of Allah (ﷺ) forbade selling or giving away the right to inheritance by a manumitted slave.
Reference: Sunan Abi Dawud 2919
In-book reference: Book 19, Hadith 35
English translation: Book 18, Hadith 2913