That the Prophet (ﷺ) said: "Whoever carries weapons against us, he is not from us."
Jami` at-Tirmidhi Book 17, Hadith 43
← Previous Hadith That 'Ali burnt some people who apostasized from Islam. This news reached Ibn 'Abbas, so he said: "If it were me I would have killed them according to the statement of Messenger of Allah (ﷺ). The Messenger of Allah (ﷺ) said: 'Whoever changes his religion then kill him.' And I would not have burned them because the Messenger of Allah (ﷺ) said: 'Do not punish with the punishment of Allah.' So this reached 'Ali, and he said: "Ibn 'Abbas has told the truth."

Jami` at-Tirmidhi Book 17, Hadith 42 Next Hadith → That he heard the Messenger of Allah (ﷺ) saying: "The punishment of the Sahir is a strike of the sword."

Jami` at-Tirmidhi Book 17, Hadith 44