The Peak of Eloquence · Hadith 1951 (#Passage #310)

٢٥٩. وَقَالَ (عليه السلام): الْوَفَاءُ لِأَهْلِ الْغَدْرِ غَدْرٌ عِنْدَ اللهِ، وَالْغَدْرُ بَأَهْلِ الْغَدْرِ وَفَاءٌ عِنْدَ اللهِ.

259. Amīr al-mu’minīn, peace be upon him, said: Faithfulness with faithless people is faithlessness with Allāh, while faithlessness with faithless people is faithfulness with Allāh.

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