Hold back your tongue...
Al-Kāfi|Volume 8|Book 1|Chapter 537
عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ هِشَامِ بْنِ سَالِمٍ عَنْ أَبِي عَبْدِ اللَّهِ (عليه السلام) قَالَ مَا أَيْسَرَ مَا رَضِيَ بِهِ النَّاسُ عَنْكُمْ كُفُّوا أَلْسِنَتَكُمْ عَنْهُمْ.
537. Ali Bin Ibrahim, from his father, from Ibn Abi ‘Umayr, from Hisham Bin Salim, who has narrated the following: Abu Abdullah عليه الصلاة والسلام has said: ‘How easy it is to make the people to be happy with you. Just restrain your tongues from (speaking against) them’.
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/501)
- Ṣaḥīḥ al-Kāfī