Musannaf Ibn Abi Shayba 33:158

Sufyan ibn 'Uyaynah narrated to us, from al-Zuhri, from 'Urwah and Sa'id, from Hakim ibn Hizam, who said: I asked the Prophet, may God bless him and grant him peace, and he gave me. Then I asked him, and he gave me. Then I asked him, and he gave me. Then he said: "Indeed, this wealth is green and sweet. Whoever takes it with a good soul, it is blessed for him in it; and whoever takes it with the greed of the soul, it is not blessed for him in it, and he is like the one who eats and is not satisfied. And the upper hand is better than the lower hand."