It was narrated that 'Abdullah said: "The Messenger of Allah (ﷺ) said: “Verbally abusing a Muslim is immorality and fighting him is Kufr (disbelief)”"
SahihSahihSahihBook 0 · Hadith 69
سنن ابن ماجه
It was narrated that 'Abdullah said: "The Messenger of Allah (ﷺ) said: “Verbally abusing a Muslim is immorality and fighting him is Kufr (disbelief)”"