hadith
6708
۞
Imam Ali (AS) said, The intelligent person is one who guards his tongue from backbiting.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) : اَلعاقِلُ مَنْ صانَ لِسانَهُ عَنِ الغِيْبَةِ