《汉书·传·谷永杜邺传》
至于阳信侯郑业，都是因私情做了一国之君，并不是功德达到这个地步。
及阳信侯业，皆缘私君国，非功义所止。
As for marquis of Yangxin Zhengye, he became the ruler of a country due to personal connections, rather than reaching that position due to merit.