The Peak of Eloquence · Hadith 1771 (#Passage #130)

١٠٧. وَقَالَ (عليه السلام): رُبَّ عَالِمٍ قَدْ قَتَلَهُ جَهْلُهُ وَعِلْمُهُ مَعَهُ لَا يَنْفَعُهُ.

107. Amīr al-mu’minīn, peace be upon him, said: Often the ignorance of a learned man ruins him while the knowledge he has does not avail him.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).