The Imams عليه السلام inherited the knowledge of the Holy prophet صلى الله عليه وعلى آله وسلم and all the prophets and their successors before them

3. Muhammad ibn Yahya has narrated from Salama ibn al-Khattab from ‘Adallah ibn Muhammad from ‘Adallah ibn al-Qasim from Zur‘a ibn Muhammad from al-Mufaddal ibn ‘Umar from who has said the following. “Solomon inherited David. Muhammad صلى الله عليه وعلى آله وسلم inherited Solomon and we inherited Muhammad صلى الله عليه وعلى آله وسلم. We have the knowledge of Torah and the Gospel (Injil), the Psalms, (al-Zabur) and the explanation of what the tablets contained.” I (the narrator) said, “This certainly is the knowledge.” The Imams عليه السلام said, “This is not knowledge. Knowledge is what happens day after day and hour after hour.”