Sayyidina Ikrimah (RA) reported that Sayyidina Ali sentenced those who had apostatised from Islam to be burnt down. When Sayyidina Ibn Abbas (RA) learnt of it, he said, “If I was there then I would have had them killed because Allah’s Messenger (SAW) had said, “He who changes his religion should be killed, I would not burn him because Allah’s Messenger (SAW) had said, ‘ Do not punish with Allah’s punishment.” When Sayyidina Ali learnt of it, he said, “Ibn Abbas (RA), has spoken the truth.”
[Bukhari 3017]