The Prophet (peace and blessings on him and his family) said, “The best of richness is richness of the self” (scale of wisdom: h.# 4873)

Imam Ali (AS) said Goodness does not lie in the increase of your wealth and of your progeny, rather goodness lies in the increase of your knowledge, and the heightening of your clemency, and in your vying with other people in the worship of Allah. If you do good then you should praise Allah, but if you commit evil then seek forgiveness from Allah. (Scale of Wisdom, h. #2042)