Musnad Ahmad 3:110

Isma'il narrated to us, Yunus narrated to us, 'Ata' ibn Farrukh, the freed slave of the Quraysh, narrated to us, from 'Uthman ibn 'Affan, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Allah admitted a man into Paradise who was easygoing: as a purchaser, as a seller, as a judge, and as a claimant."