Sahih al-Bukhari 2668
صحيح البخاري#2668SahihNarrated Ibn Abu Mulaika:Ibn `Abbas wrote that the Prophet (ﷺ) gave his verdict on the basis of the defendant's oath
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 52:31