(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." (JA)
Reference (JA): Al-Adab Al-Mufrad 431 (JA)
In-book reference (JA): Book 24, Hadith 13 (JA)
English translation (JA): Book 24, Hadith 431 (JA)