Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) was asked: What is richness (wealth)? He (peace and blessings be upon him) said: "To be free of need for what is in the hands of people."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10201