Sahih al-Bukhari 2802
صحيح البخاري#2802SahihNarrated Jundab bin Sufyan:In one of the holy Battles a finger of Allah's Messenger (ﷺ) (got wounded and) bled. He said, "You are just a finger that bled, and what you got is in Allah's Cause
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: 56:19