Sunan an-Nasa'i 4698
سنن النسائي#4698SahihIt was narrated from Salim, from his father, that the Messenger of Allah said:"Whoever sets free his share of a slave should set him free completely from his own wealth, if he has enough wealth to cover the price of the slave
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 44:250