(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." (PT)
Reference (PT): Al-Adab Al-Mufrad 429 (PT)
In-book reference (PT): Book 24, Hadith 11 (PT)
English translation (PT): Book 24, Hadith 429 (PT)