Sahih al-Bukhari 3722
صحيح البخاري#3722SahihNarrated Abu `Uthman:During one of the Ghazawat in which Allah's Messenger (ﷺ) was fighting, none remained with the Prophet (ﷺ) but Talha and Sa`d
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: 62:70