Musnad Abu Ya'la al-Mawsili 150:401

'Amr ibn Muhammad al-Naqid narrated to us, Sufyan ibn 'Uyaynah narrated to us, from al-Zuhri, from 'Urwah, from 'Aishah, from the Prophet, peace and blessings of Allah be upon him, who said: "No wealth has benefited us as the wealth of Abu Bakr has benefited us."