Aisha reported: The Prophet, peace and blessings be upon him, said:
إِنَّ الرِّفْقَ لَا يَكُونُ فِي شَيْءٍ إِلَّا زَانَهُ وَلَا يُنْزَعُ مِنْ شَيْءٍ إِلَّا شَانَهُ
Verily, kindness is not found in anything but that it beautifies it, and it is not removed from anything but that it disgraces it.
Source: Ṣaḥīḥ Muslim 2594, Grade: Sahih