The Peak of Eloquence · Hadith 807 (#Passage #1)

ومن خطبة له (عليه السلام) في الموعظة وبيان قرباه من رسول الله

Warning to neglectful people, and about the vastness of his own knowledge

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