《宋书·列传·卷九十五》
恰遇魏人郑兵将军从许昌回来，两面夹击德祖，毛德祖大败，丢下一千多士兵，退回虎牢固守。
会郑兵军从许昌还，合围，德祖大败，失甲士千余人，退还固城。
He chanced to meet and ambush the returning general Mao Dezu from Xuchang and defeated him, driving him 1000 miles back to Hulao for protection.