'A'isha, the wife of Allah's Apostle ﷺ, reported Allah's Apostle ﷺ as saying: Kindness is not to be found in anything but that it adds to its beauty and it is not withdrawn from anything but it makes it defective.

حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِيُّ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، عَنِ الْمِقْدَامِ، - وَهُوَ ابْنُ شُرَيْحِ بْنِ هَانِئٍ - عَنْ أَبِيهِ، عَنْ عَائِشَةَ، زَوْجِ النَّبِيِّ ﷺ عَنِ النَّبِيِّ ﷺ قَالَ " إِنَّ الرِّفْقَ لاَ يَكُونُ فِي شَىْءٍ إِلاَّ زَانَهُ وَلاَ يُنْزَعُ مِنْ شَىْءٍ إِلاَّ شَانَهُ " .