Al-Kāfi
Hadith 563 4ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ مَحْبُوبٍ عَنْ أَبِي وَلادٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلام) عَنْ قَوْلِ الله عَزَّ وَجَلَّ الَّذِينَ آتَيْناهُمُ الْكِتابَ يَتْلُونَهُ حَقَّ تِلاوَتِهِ أُولئِكَ يُؤْمِنُونَ بِهِ قَالَ هُمُ الائِمَّةُ (عَلَيْهم السَّلام )
4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from abu Wallad who has said that he asked abu ‘Abdallah (a.s.) about the meaning of the words of Allah, the Most Holy, the Most High. “The people who have received Our Book (Quran), and read it thoroughly, believe in it. Those who disbelieve the Book are certainly losers.” (2:121) The Imams (a.s.) said that such people are the Imams (a.s.).”