《资治通鉴·唐纪·唐纪十七》
黔中、岭南、闽中等地的州县官，不由吏部选授，委托都督选择本地人充任。凡在任官员，每任满一年考核一次，六品以下官员，经四次考核为任职期满。咸亨元年春季正月，丁丑，右相刘仁轨请求退休，获得批准。三月，甲戌朔，唐高宗因旱灾，大赦天下罪人，更改年号。
春，正月，丁丑，右相刘仁轨请致仕；许之。三月，甲戌朔，以旱，赦天下，改元。
The official ranks of the prefectures and counties of the regions of Western Hunan, Lingnan, and Fujian, etc., were not determined by the Ministry of Personnel, which instead entrusted the Dudu to select local people for the posts. All serving officials were subject to annual evaluations. Officials ranked 6th class and below who passed four evaluations would serve their full term. In the first lunar month of spring of the first year of Xianheng, Ding Chou, the Right Minister Liu Rengui submitted a retirement application, and it was approved. On the first Jiaxu day of the third lunar month, Emperor Gaozong of the Tang Dynasty declared a general amnesty for all the crimes in the country due to the drought, and he changed the reign title.