(5, 6) باب الْقَوَدِ
It was narrated from 'Abdullah that the Messenger of Allah said:
"It is not permissible to shed the blood of a Muslim except in one of three cases: A soul for a soul, a adulterer who has been married, and one who separates leaving his religion." (JA)
Reference (JA): Sunan an-Nasa'i 4721 (JA)
In-book reference (JA): Book 45, Hadith 16 (JA)
English translation (JA): Vol. 5, Book 45, Hadith 4725 (JA)