Perople are like mines
Al-Kāfi|Volume 8|Book 1|Chapter 197
سَهْلٌ عَنْ بَكْرِ بْنِ صَالِحٍ رَفَعَهُ عَنْ أَبِي عَبْدِ اللَّهِ (عليه السلام) قَالَ النَّاسُ مَعَادِنُ كَمَعَادِنِ الذَّهَبِ وَ الْفِضَّةِ فَمَنْ كَانَ لَهُ فِي الْجَاهِلِيَّةِ أَصْلٌ فَلَهُ فِي الْإِسْلَامِ أَصْلٌ.
197. Sahl, from Bakr Bin Saleh with an unbroken chain from Abu Abdullah عليه الصلاة والسلام the following: Abu Abdullah عليه الصلاة والسلام said: ‘The people are (similar to) a mine, like a mine of gold and that of silver. So they had an origin in the days of ignorance (pre-Islam), so there are (very few) who had an origin in Al-Islam’.
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/63)
- Ṣaḥīḥ al-Kāfī