Sahih al-Bukhari 3017
صحيح البخاري#3017SahihNarrated `Ikrima:`Ali burnt some people and this news reached Ibn `Abbas, who said, "Had I been in his place I would not have burnt them, as the Prophet (ﷺ) said, 'Don't punish (anybody) with Allah's Punishment.' No doubt, I would have killed them, for the Prophet (ﷺ) said, 'If somebody (a Muslim) discards his religion, kill him
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: 56:226