《资治通鉴·唐纪·唐纪五十七》
丙辰，李师道密派亲信二人带手令前往阳谷，命行营兵马副使张暹杀掉刘悟，割下他的头送郓州查验，然后由张暹代领行营兵马。
丙辰，师道潜遣二使赍帖授行营兵马副使张暹，令斩悟首献之，勒暹权领行营。
On the day of Bingchen, Li Shidao secretly sent two trusted aides with a handwritten order to Yanggu, asking the deputy commander of the advance force, Zhang Xian, to kill Liu Wu, cut off his head and send it to Yanzhou for verification. Zhang Xian was then to command the advance force in Liu Wu’s place.