Umar on Humility: Allah have mercy on one who corrects me

‘Abbad ibn ‘Abbad reported: Umar ibn al-Khattab, may Allah be pleased with him, said, “May Allah have mercy on the one who shows me my faults.”

Source: Sunan al-Dārimī 649

عَنْ عَبَّادِ بْنِ عَبَّادٍ الْخَوَّاصِ قَالَ قَالَ عُمَرُ بْنُ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ رَحِمَ اللَّهُ مَنْ أَهْدَى إِلَيَّ عُيُوبِي

649 سنن الدارمي المقدمة باب رسالة عباد بن عباد الخواص