Al-Kāfi

Hadith 1108
arrogance
1ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ مُحَمَّدِ بْنِ عِيسَى عَنْ يُونُسَ عَنْ أَبَانٍ عَنْ حُكَيْمٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيهِ السَّلام) عَنْ أَدْنَى الإلْحَادِ فَقَالَ إِنَّ الْكِبْرَ أَدْنَاهُ.
1. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa from Yunus from Aban from Hakim who has said the following: “Once I asked Abu ‘Abdillah (a.s.) about a minimum degree of atheism and the Imam said, ‘Arrogance is its minimum.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī