Sahih Muslim 6403
صحيح مسلم#6403SahihJabir reported that a slave of Hatib came to Allah's Messenger (ﷺ) complaining against Hatib and said:Hatib will definitely go to Hell. (But) Allah's Messenger (ﷺ) said: You tell a lie; he would not get into that for he had taken part in Badr and in (the expedition of) Hudaibiya
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: 44:234