Sunan Abu Dawud
2905
Daif+3

Narrated Abdullah ibn Abbas: A man died leaving no heir but a slave whom he had emancipated. The Messenger of Allah (ﷺ) asked: Has he any heir? They replied: No, except a slave whom he had emancipated. The Messenger of Allah (ﷺ) assigned his estate to him (the emancipated slave)

DaifAl-Albani
DaifMuhammad Muhyi Al-Din Abdul Hamid