Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings be upon him) saying: "If a human being had two valleys of wealth, he would seek a third, and nothing fills the belly of a human being except dust. Then Allah, the Mighty and Majestic, accepts the repentance of whoever repents."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 539