《隋书·列传·卷七》
郑译、刘日方商议，想授高祖为冢宰，郑译自己做大司马，刘日方也想做小冢宰。
郑译、刘昉议，欲授高祖冢宰，郑译自摄大司马，刘昉又求小冢宰。
Zheng Yi and Liu Rifu plotted to give the title of Grand Chancellor to Gao Zu, make Zheng Yi Grand General, and have Liu Rifu as the deputy Grand Chancellor