Sahih al-Bukhari 7234
صحيح البخاري#7234SahihNarrated Qais:We went to pay a visit to Khabbab bin Al-Art and he had got himself branded at seven spots over his body. He said, "If Allah's Messenger (ﷺ) had not forbidden us to invoke Allah for death, I would have invoked for it
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: 94:9