Sahih al-Bukhari 3812
صحيح البخاري#3812SahihNarrated Sa`d bin Abi Waqqas:I have never heard the Prophet (ﷺ) saying about anybody walking on the earth that he is from the people of Paradise except `Abdullah bin Salam. The following Verse was revealed concerning him: "And a witness from the children of Israel testifies that this Qur'an is true
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: 63:37