《北史·列传·卷四十》
后主派武士刘桃枝率八十名禁兵召请高俨，刘桃枝远远地叩拜他，他命部下将刘桃枝捆绑起来，准备杀死，禁兵们四散逃走。
帝使刘桃枝将禁兵八十人召俨。桃枝遥拜，俨命反缚，将斩之，禁兵散走。
The Later Lord sent Liu Taozhi, a military officer, to summon Gao Yan with eighty guards. Liu Taozhi kowtowed from a distance. He ordered his men to tie Liu Taozhi up, preparing to kill him, and the guards fled in all directions.