Al-Kāfi

Hadith 963
major-sins
4ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادٍ عَنْ حَرِيزٍ عَنِ الْفُضَيْلِ بْنِ يَسَارٍ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ مَا مِنْ نَكْبَةٍ تُصِيبُ الْعَبْدَ إِلا بِذَنْبٍ وَمَا يَعْفُو الله عَنْهُ أَكْثَرُ.
4. Ali ibn Ibrahim has narrated from his father from Hammad from Hariz from Fudayl ibn Yasar from abu Ja’far (a.s.) who has said the following: “No failure ever takes place in the life of a servant (of Allah) except because of sin and that which Allah forgives him for is much more.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī