The Peak of Eloquence · Hadith 97 (#Passage #1)
Chapter 22 | About those who accused him of killing Uthman
ومن خطبة له (عليه السلام) حين بلغه خبر الناكثين ببيعته [وفيها يذم عملهم ويلزمهم دم عثمان ويتهدّدهم بالحرب]
When he received reports about those who had broken their oath of allegiance to him [and about those who accused him of ‘Uthmān’s killing]
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).