Musnad Abu Ya'la al-Mawsili 150:71

Muhammad ibn Abdullah ibn Numayr narrated to us, Ibn Idris narrated to us, Ibn Abi Dhi'b narrated to us, from Makhlad ibn Khuffaf, from Urwah, from Aisha, who said: The Messenger of Allah (may Allah bless him and grant him peace) decreed that the yield is in return for the liability.