Do not turn unbelievers after me ; one of you may strike the neck of the other.
Sunan Abi Dawud Book 42, Hadith 91
← Previous Hadith The Prophet (May peace be upon him) distributed (spoils) among the people I said to him : Give so and so for he is a believer. He said : Or he is a Muslim. I give a man something while another man is dearer to me than him, fearing that he may fall into Hell on his face.

Sunan Abi Dawud Book 42, Hadith 90 Next Hadith → If any believing man calls another believing man an unbeliever, if he is actually an infidel, it is all right ; if not, he will become an infidel.

Sunan Abi Dawud Book 42, Hadith 92