The Peak of Eloquence · Hadith 1842 (#Passage #201)

١٥٦. وَقَالَ (عليه السلام): عَلَيْكُمْ بِطَاعَةِ مَنْ لَا تُعْذَرُونَ بِجَهَالَتِهِ.

156. Amīr al-mu’minīn, peace be upon him, said: On you lies (the obligation of) obedience to the person about whom you cannot plead the excuse of ignorance. [1]

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