Musnad Abu Ya'la al-Mawsili 134:4

Jabbara ibn al-Mughallis and Abd al-Ghaffar both said: Abu Shihab narrated to us, from al-A'mash, from Anas, who said: The Messenger of Allah (peace be upon him) said: "Woe to the owned from the owner. Woe to the owner from the owned. Woe to the rich from the poor. Woe to the poor from the rich. Woe to the strong from the weak. Woe to the weak from the strong."