Sahih al-Bukhari 6146
صحيح البخاري#6146SahihNarrated Jundub:While the Prophet (ﷺ) was walking, a stone hit his foot and stumbled and his toe was injured. He then (quoting a poetic verse) said, "You are not more than a toe which has been bathed in blood 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: 78:172