Sahih Muslim 2314
صحيح مسلم#2314SahihJabir reported that a person among the Ansar who was called Abu Madhkur granted posthumous freedom to his slave who was called Ya'qub. The rest of the hadith is the same
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: 12:51