The Peak of Eloquence · Hadith 1698 (#Passage #57)

٤٣. وَقَالَ (عليه السلام) فِي ذِكْرِ خَبَّابِ بْنِ الْأَرَتِّ: يَرْحَمُ اللَّهُ خَبَّابَ بْنَ الْأَرَتِّ فَلَقَدْ أَسْلَمَ رَاغِباً وَهَاجَرَ طَائِعاً وَقَنِعَ بِالْكَفَافِ وَرَضِيَ عَنِ اللَّهِ وَعَاشَ مُجَاهِداً.

43. Amīr al-mu’minīn, peace be upon him, said about Khabbāb ibn al-Aratt [1]: May Allāh have mercy on Khabbāb ibn al-Aratt since he accepted Islam willingly, immigrated (from Mecca) obediently, remained content with what sufficed him, was pleased with Allāh and lived the life of a mujāhid (holy soldier).

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