Musnad Ahmad 32:1786

Aswad ibn Amir narrated to us, Hammad ibn Salamah narrated to us, from Thabit, from Anas: "A man asked the Prophet, may Allah bless him and grant him peace, and he gave him a flock of sheep between two mountains. He went to his people and said: 'O my people, embrace Islam, for Muhammad gives the gift of a man who does not fear poverty.' And a man would come to him wanting nothing but the world, yet he would not reach the evening until his religion was more beloved to him than the world and everything in it."