Riyad as-Saliheen 1552
Abu Hurairah (May Allah be pleased with him) said:
The Messenger of Allah ﷺ said: "It does not befit a Siddiq (righteous Muslim) to frequently curse others."
[Muslim].
وعن أبي هريرة رضي الله عنه أن رسول الله ﷺ قال:
"لا ينبغي لصدِّيق أن يكون لعانًا" ((رواه مسلم)).
Classification
Sahih (Authentic)
References
Riyad as-Saliheen 1552
Riyad as-Saliheen Book of Prohibited actions, Hadith 42