It wasnarrated from Abu Hurairah that the Messenger of Allah (ﷺ)said:
"Richness is not an abundance of worldly goods, rather richnessiscontentment with one's lot." (ES)
English reference (ES): Vol. 5, Book 37, Hadith 4137 (ES)
Arabic reference (ES): Book 37, Hadith 4276 (ES)