Al-Kāfi
Hadith 559 5ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ مُحَمَّدِ بْنِ الْفُضَيْلِ قَالَ سَأَلْتُهُ عَنْ قَوْلِ الله عَزَّ وَجَلَّ بَلْ هُوَ آياتٌ بَيِّناتٌ فِي صُدُورِ الَّذِينَ أُوتُوا الْعِلْمَ قَالَ هُمُ الائِمَّةُ (عَلَيْهم السَّلام) خَاصَّةً.
5. A number of our people has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘d from Muhammad ibn al-Fudayl who has said that he asked abu ‘Abdallah (a.s.) about the meaning of the following verse of the Holy Quran. “In fact, the Quran consists of illustrious verses that exist in the hearts of those who have knowledge. . .” (29:49) The Imams (a.s.) said, “They are the Imams (a.s.) exclusive of all others.”