Musnad Abu Ya'la al-Mawsili 156:15

Abu Kurayb narrated to us, Ishaq bin Sulayman narrated to us, from al-Mughirah bin Muslim, from Yunus, from al-Hasan, from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "Indeed, Allah loves the easy-going in selling, the easy-going in buying, and the easy-going in settling debts."