The Peak of Eloquence · Hadith 785 (#Passage #5)
Chapter 170 | In response to a Kolayb al-Jarmi who came from Basra to enquire about his position vis-a-vis the people of Jamal
فَقَالَ الرَّجُلُ: فَوَاللهِ مَااسْتَطَعْتُ أَنْ أَمْتَنِعَ عِنْدَ قِيَامِ الْحُجَّةِ عَلَيَّ، فَبَايَعْتُهُ عَلَيْهِ الْسَّلاَمُ.
This man related that: By Allāh, by such a clear argument I could not refrain from swearing allegiance to Amīr al-mu’minīn.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).