Musnad Ahmad 30:3398

Yazid narrated to us, Muhammad informed us, from Abu Salamah, from Abu Hurairah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Narrate from the Children of Israel, and there is no harm." He said: "While a man was driving a cow, it became exhausted, so he rode it. It turned toward him..." and he mentioned the rest of the hadith.