Ibn Mas'ud (May Allah be pleased with him) reported:
The Messenger of Allah (ﷺ) said, "A true believer is not involved in taunting, or frequently cursing (others) or in indecency or abusing."[At-Tirmidhi]. (PT)
App reference (PT): Book 18, Hadith 45 (PT)
Arabic/English book reference (PT): Book 18, Hadith 1555 (PT)