hadith
7806
۞
Imam Ali (AS) said, Do not accustom yourself to backbiting, for indeed being accustomed to it is a great sin.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) : لاتُعَوِّدْ نَفْسَكَ الغيبَةَ فَإنَّ مُعْتادَها عَظيمُ الجُرْمِ