Sahih Muslim 6602
صحيح مسلم#6602SahihA'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Allah's Apostle (ﷺ) as saying:Kindness is not to be found in anything but that it adds to its beauty and it is not withdrawn from anything but it makes it defective
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 45:100