From Sahih Muslim (Hadith 6601):
A'isha, the wife of Allah's Apostle (ﷺ), reported that Allah's Messenger (ﷺ) said:'A'isha, verily Allah is kind and He loves kindness and confers upon kindness which he does not confer upon severity and does not confer upon anything else besides it (kindness)
Reference: Muslim 6601