《晋书·列传·第三章》
当时文帝辅政，平定蜀国以后，命令贾充、羊祜等人分别制定礼仪、法律条令，都先向郑冲询问，然后再施行。
时文帝辅政，平蜀之后，命贾充、羊祜等分定礼仪、律令，皆先谘于冲，然后施行。
At the time, Emperor Wen wielded power. After pacifying Shu, he ordered Jia Chong, Yang Hu and others to draft etiquette and legal regulations. The drafts were always shown to Zheng first, and implemented with his approval.