Al-Kāfi - Volume 1 > Chapter on the Need for the Existence of a Divine Authority in the World and the Seriousness of this Matter
Hadith #1

1ـ عَلِيُّ بْنُ إِبْرَاهِيمَ بْنِ هَاشِمٍ عَنْ أَبِيهِ عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ عَنِ الْمِنْقَرِيِّ عَنْ حَفْصِ بْنِ غِيَاثٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) قَالَ قَالَ يَا حَفْصُ يُغْفَرُ لِلْجَاهِلِ سَبْعُونَ ذَنْباً قَبْلَ أَنْ يُغْفَرَ لِلْعَالِمِ ذَنْبٌ وَاحِدٌ.

1. Ali ibn Ibrahim ibn Hashim has narrated from his father from al-Qasim ibn Muhammad from al-Minqari from Hafs ibn Ghiyath from abu ‘Abdallah (a.s.) who has said the following. “O Hafs, seventy sins of an ignorant person may be forgiven before only one sin of a learned person is forgiven.”