Al-Kāfi

Hadith 1294
disbeliefbrotherhood
3ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ خَالِدٍ عَنْ عَلِيِّ بْنِ الْحَكَمِ عَنْ عَبْدِ الله بْنِ بُكَيْرٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ إِنَّ أَقْرَبَ مَا يَكُونُ الْعَبْدُ إِلَى الْكُفْرِ أَنْ يُوَاخِيَ الرَّجُلُ الرَّجُلَ عَلَى الدِّينِ فَيُحْصِيَ عَلَيْهِ عَثَرَاتِهِ وَزَلاتِهِ لِيُعَنِّفَهُ بِهَا يَوْماً مَا.
3. A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from Ali ibn al-Hakam from ‘Abd Allah ibn Bukayr from Zurara from abu Ja’far (a.s.) who has said the following: “Abu Ja’far (a.s.) has said, ‘A servant (of Allah) is closest to disbelief when he assumes brotherhood (in belief) with a man and then begins to count his mistakes and slips so he can one day use them against him.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī