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