《左传·隐公·隐公五年》
卫国人带领南燕军队进攻郑国，郑国的祭足、原繁、泄驾带领三军进攻燕军的前面，派曼伯和子元偷偷率领制地的军队袭击燕军的后面。
卫人以燕师伐郑。郑祭足、原繁、洩驾以三军军其前，使曼伯与子元潜军军其后。
The people of Wei led the Nan Yan army to attack Zheng. Ji Zu, Yuan Fan, and Xie Jia of Zheng led the three armies to attack the front of the Yan army, and sent Man Bo and Zi Yuan to secretly lead the army of Zhed to attack the rear of the Yan army.