Al-Kāfi
Hadith 11022- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ هِشَامِ بْنِ سَالِمٍ وَدُرُسْتَ بْنِ أَبِي مَنْصُورٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ قَالَ رَسُولُ الله (صَلَّى اللهُ عَلَيْهِ وآلِه) مَنْ تَعَصَّبَ أَوْ تُعُصِّبَ لَهُ فَقَدْ خَلَعَ رِبْقَ الإيمَانِ مِنْ عُنُقِهِ.
2. Ali b. Ibrahim from his father from Ibn Abi ‘Umayr from Hisham b. Salim and Drust b. Abu Mansur from Abu Abdillah (as) who said: Rasulullah (s) said, “Whoever discriminates or supports discrimination, he has taken off the collar of belief from his neck.”