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." (FR)
English reference (FR): Vol. 5, Book 37, Hadith 4137 (FR)
Arabic reference (FR): Book 37, Hadith 4276 (FR)