(15) باب مَا جَاءَ سِبَابُ الْمُسْلِمِ فُسُوقٌ
Narrated Ibn Mas'ud:
that the Messenger of Allah (ﷺ) said: "Verbally abusing a Muslim is disobedience and fighting him is disbelief." (TR)
Reference (TR): Jami` at-Tirmidhi 2635 (TR)
In-book reference (TR): Book 40, Hadith 30 (TR)
English translation (TR): Vol. 5, Book 38, Hadith 2635 (TR)