Sahih al-Bukhari 3745
صحيح البخاري#3745SahihNarrated Hudhaifa:The Prophet (ﷺ) said to the people of Najran, "I will send you the most trustworthy man." (Every one of) the companions of the Prophet (ﷺ) was looking forward (to be that person). He then sent Abu 'Ubaida
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: 62:90