(23) باب فَضْلِ الرِّفْقِ
'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Kindness is not to be found in anything but that it adds to its beauty and it is not withdrawn from anything but it makes it defective.
Reference: Sahih Muslim 2594 a
In-book reference: Book 45, Hadith 100
USC-MSA web (English) reference(deprecated numbering scheme): Book 32, Hadith 6274