Sunan Abi Dawud 2919
سنن أبي داود#2919SahihNarrated Ibn 'Umar:The Messenger of Allah (ﷺ) forbade selling or giving away the right to inheritance by a manumitted slave
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (2535) Sahih Muslim (1506)
In-book reference: 19:35