Al-Kāfi - Volume 2 > Revilement
Hadith #3

3ـ عَنْهُ عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنْ هِشَامِ بْنِ سَالِمٍ عَنْ أَبِي بَصِيرٍ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ إِنَّ رَجُلاً مِنْ بَنِي تَمِيمٍ أَتَى النَّبِيَّ (صَلَّى اللهُ عَلَيْهِ وآلِه) فَقَالَ أَوْصِنِي فَكَانَ فِيمَا أَوْصَاهُ أَنْ قَالَ لا تَسُبُّوا النَّاسَ فَتَكْتَسِبُوا الْعَدَاوَةَ بَيْنَهُمْ.

3. It is narrated from him (narrator of the Hadith above) from al-Hassan ibn Mahbub from Hisham ibn Salim from abu Basir from abu Ja’far (a.s.) who has said the following: “Once a man from the people of Tamim came to the Holy Prophet and said, ‘Instruct me with good advice.’ Of the good advice given to him was: ‘Do not revile people; it only earns their animosity against you.’”