The Sufficient (Vol 1) · Hadith 591 (#Ḥadīth #5)
Chapter 32 | The Imams are the Heirs of Knowledge to Inherit it one from the other
5ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ عُمَرَ بْنِ أَبَانٍ قَالَ سَمِعْتُ أَبَا جَعْفَرٍ يَقُولُ إِنَّ الْعِلْمَ الَّذِي نَزَلَ مَعَ آدَمَ لَمْ يُرْفَعْ وَمَا مَاتَ عَالِمٌ فَذَهَبَ عِلْمُهُ.
5. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Fudalah ibn Ayyub from ‘Umar ibn Aban who has said that he heard abu Ja‘far say the following. “The knowledge that came with Adam was not taken away. No man of knowledge has ever died along with his knowledge.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).