Musnad Ahmad 1211:1

Hashim narrated to us, he said: Layth narrated to us, he said: Sa’id ibn Abi Sa’id narrated to me, from ‘Ubayd Abu al-Walid, who said: I heard Khawlah bint Qays ibn Qahd—and she was married to Hamzah ibn ‘Abd al-Muttalib—saying: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "Indeed, this wealth is green and sweet. Whoever acquires it rightfully, it is blessed for him therein. And how many a person indulges in the wealth of Allah and His Messenger according to what his soul desires, will have nothing on the Day of Resurrection but the Fire."