The servant (who conceals) the faults of others in this world, Allah would conceal his faults on the Day of Resurrection.

عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَسْتُرُ عَبْدٌ عَبْدًا فِي الدُّنْيَا إِلاَّ سَتَرَهُ اللَّهُ يَوْمَ الْقِيَامَةِ