Sahih al-Bukhari 4595
صحيح البخاري#4595SahihNarrated Ibn `Abbas:Not equal are those believers who sat (at home) and did not join the Badr battle and those who joined the Badr battle
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: 65:117