Hadith 1553

Abud-Darda' (May Allah be pleased with him) said: The Messenger of Allah (PBUH) said, "Those who frequently resort to cursing (people) would neither be accepted as witnesses nor as intercessors on the Day of Resurrection."

[Muslim].

- وعن أبي الدرداء رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم ‏:‏ ‏"‏لا يكون اللعانون شفعاء، ولا شهداء يوم القيامة‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

Reference: 1715430
In-book reference: Book 17, Hadith 1553