《三国志·魏书·程郭董刘蒋刘传》
刘勋对他的做法很奇怪，刘晔说： 郑宝不讲法令制度，他的部队向来都将抢劫掠夺作为利益来源，我向来没有资本，却又整顿约束他们，他们心中一定怀着怨恨，难以长久，所以托付给你罢了。 
勋怪其故，晔曰： 宝无法制，其众素以钞略为利，仆宿无资，而整齐之，必怀怨难久，故相与耳。 
Liu Xun thought his approach was odd, Liu Ye said: Zheng Bao doesn’t follow laws, his army has always used robbery and looting as sources of profit, I haven’t built up any capital yet I also tried to control them, they must harbor grudges in their hearts, it’s hard to do this in the long run, so I gave them to you 