The Peak of Eloquence · Hadith 1821 (#Passage #180)

يَا كُمَيْل بْن زِيَادٍ، إِنَّ هذهِ الْقُلُوبَ أَوْعِيَةٌ فَخَيْرُهَا أَوْعَاهَا فَاحْفَظْ عَنِّي مَا أَقُولُ لَكَ:

O Kumayl, these hearts are containers. The best of them is that which preserves (its contents). So, preserve what I say to you:

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