Musannaf Ibn Abi Shayba 13:3421

Abu Bakr narrated to us, he said: Ibn ‘Ulayyah narrated to us, from al-Jurayri, from Mudharib ibn Hazn, from Abu Hurayrah, who said: I was a hired worker for Yusra bint Safwan in exchange for my food and the turn of my riding animal.