(202) بَابُ سِبَابِ الْمُسْلِمِ فُسُوقٌ
'Abdullah reported that the Prophet, may Allah bless him and granthim peace, said, "Reviling a Muslim is deviant behaviour and killing himis disbelief." (DE)
Reference (DE): Al-Adab Al-Mufrad 431 (DE)
In-book reference (DE): Book 24, Hadith 13 (DE)
English translation (DE): Book 24, Hadith 431 (DE)