"I heard the Messenger of Allah say: 'It is not permissible to shed the blood of a Muslim except in three cases: A man who commits adultery after having married; or one who kills another person, who is to be killed; or who reverts to Kufr after having accepted Islam, who is to be killed.'"
Sunan an-Nasa'i Book 37, Hadith 93
← Previous Hadith 'Uthman said: "I heard the Messenger of Allah say: 'It is not permissible to shed the blood of a Muslim except in three cases: A man who commits adultery after having married; or one who kills intentionally, in which case he deserves retaliation; or one who apostatizes after having become Muslim, in which case he deserves to be killed.'"

Sunan an-Nasa'i Book 37, Hadith 92 Next Hadith → "The Messenger of Allah said: 'Whoever changes his religion, kill him.'"

Sunan an-Nasa'i Book 37, Hadith 94