《容斋随笔·卷十二·光武弃冯衍》
汉朝衰微而又复兴，固然都是汉光武的功劳，但是更始帝刘玄即天子位之后，汉光武按受了他的封爵宫位，面向北做了臣子，等到平定了王郎、安定了河北，更始命令撤军，但汉光武推辞不受召见，在这时开始有了二心。
汉室中兴，固皆光武之功，然更始既即天子位，光武受其爵秩，北面为臣矣，及平王郎、定河北，诏令罢兵，辞不受召，于是始贰焉。
The fact that the dynasty of the Han declined and then revived was certainly due to the achievements of Emperor Guangwu of Han, but after Emperor Gengshi Liu Xuan came to the throne, Emperor Guangwu of Han accepted his title and position and bowed to him as a subject, but when he had pacified Wang Lang and stabilized Hebei, Gengshi ordered him to withdraw his troops, but Emperor Guangwu of Han declined the summons and it was then that he began to have second thoughts.