Sahih Muslim 4471
صحيح مسلم#4471SahihIbn 'Abbas reported that Allah's Messenger (ﷺ) pronounced judgment on the basis of oath by the defendant
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: 30:2