Sahih Muslim 4331
صحيح مسلم#4331SahihAbu Huraira reported Allah's Apostle (ﷺ) as saying:In case the slave is owned by two persons, and one of them emancipates him, he will guarantee (his full freedom)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 27:78