Hadithcore
Riyad as-Salihin, 521

Abu Hurairah (May Allah be pleased with him) reported:

The Prophet (ﷺ) said, "Richness is not the abundance of wealth, rather it is self-sufficiency." <b>[Al-Bukhari and Muslim]</b>.

عن أبي هريرة رضي الله عنه عن النبي صلى الله عليه وسلم قال‏:‏ ‏"‏ليس الغنى عن كثرة العرض، ولكن الغنى غنى النفس‏"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏ ‏"‏العرض‏"‏ بفتح العين والراء‏:‏ هو المال‏.‏

References1 variant
In-Book Reference
Introduction, Hadith 521
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) The useful commendable richness is the sense of richness derived from self-contentment.<br> 2) The Shariah teaches a believer the true standards in life. Real richness is not the wealth and worldly possessions a person has, but it is his contentment and modesty. It is the richness of the heart.