Sahih al-Bukhari 4673
صحيح البخاري#4673SahihNarrated `Abdullah bin Ka`b:I heard Ka`b bin Malik at the time he remained behind and did not join (the battle of) Tabuk, saying, "By Allah, no blessing has Allah bestowed upon me, besides my guidance to Islam, better than that of helping me speak the truth to Allah's Messenger (ﷺ) otherwise I would have told the Prophet (ﷺ) a lie and would have been ruined like those who had told a lie when the Divine Inspiration was revealed:-- "They will swear by Allah to you (Muslims) when you return to them.. the rebellious people
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: 65:195