《隋书·帝纪·卷四》
初八，马邑校尉刘武周杀太守王仁恭，起兵作乱，向北联合突厥，自称 定杨可汗 。
己丑，马邑校尉刘武周杀太守王仁恭，举兵作乱，北连突厥，自称定杨可汗。
On the eighth day of the first lunar month, Liu Wuzhou, School Commandant of Mayi, killed the governor Wang Rengong, led an army, allied with the Tujue in the north, and proclaimed himself as Khan of Dingyang.