(6) باب مَا يُبَاحُ بِهِ دَمُ الْمُسْلِمِ
'Abdullah (b. Mas'ud) reported Allah's Messenger (ﷺ) as saying:
It is not permissible to take the life of a Muslim who bears testimony (to the fact that there is no god but Allah, and I am the Messenger of Allah, but in one of the three cases: the married adulterer, a life for life, and the deserter of his Din (Islam), abandoning the community. (DE)
Reference (DE): Sahih Muslim 1676 a (DE)
In-book reference (DE): Book 28, Hadith 34 (DE)
USC-MSA web (English) reference(deprecated numbering scheme): Book 16, Hadith 4152 (DE)