It is narrated from Sayyiduna Abu Waqid al-Laythi (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Allah, the Mighty and Majestic, says: We sent down wealth for establishing the prayer and giving the zakah. If the son of Adam had a valley (of wealth), he would love to have two valleys; and if he had two valleys, he would long for a third. Nothing fills the belly of the son of Adam except dust, and Allah accepts the repentance of whoever repents."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3290