Musnad Ahmad 30:1909

'Affan narrated to us, Abu 'Awanah narrated to us, from 'Umar ibn Abi Salamah, from his father, from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "If the slave runs away" — and he said once: "If the slave steals" — "then sell him, even if for a nish." And the nish is half an uqiyah.