Chapter 88: Apostates
Narrated 'Ikrima: Some Zanadiqa (atheists) were brought to 'Ali and he burnt them. The news of this event, reached Ibn
'Abbas who said, "If I had been in his place, I would not have burnt them, as Allah' s Messenger (ﷺ) forbade
it, saying, 'Do not punish anybody with Allah' s punishment (fire).' I would have killed them according
to the statement of Allah' s Messenger (ﷺ), 'Whoever changed his Islamic religion, then kill him.'"
Sahih al-Bukhari 6922