The Peak of Eloquence · Hadith 2069 (#Passage #428)

وَمَنْ نَظَرَ فِي عُيُوبِ النَّاسِ فَأَنْكَرَهَا ثُمَّ رَضِيَهَا لِنَفْسِهِ فذَاك الْأَحْمَقُ بِعَيْنِهِ.

He who observes the shortcomings of others and disapproves of them and then accepts them for himself is definitely a fool.

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