Musnad Abu Ya'la al-Mawsili 53:4

Narrated to us Ishaq bin Abi Isra'il, narrated to us Hajjaj or someone else, informed us Shu'bah, narrated to us Ma'bad bin Khalid that he heard Harithah bin Wahb al-Khuza'i say: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "Shall I not inform you of the people of Paradise? Every weak person who is deemed weak; if he were to swear by Allah, He would fulfill it for him. And the people of the Fire are every arrogant, haughty, and greedy person."