(202) بَابُ سِبَابِ الْمُسْلِمِ فُسُوقٌ
Sa'id ibn Malik reported that the Prophet, may Allah bless himand grant him peace, said, "Reviling a Muslim is deviant behaviour." (FR)
Reference (FR): Al-Adab Al-Mufrad 429 (FR)
In-book reference (FR): Book 24, Hadith 11 (FR)
English translation (FR): Book 24, Hadith 429 (FR)