《资治通鉴·唐纪·唐纪三十三》
安禄山任命海运使刘道玄代理景城太守，清池县尉贾载和盐山县尉河内人穆宁一起杀了刘道玄，获得盔甲器仗共五十多船，然后持着刘道玄的头颅去见长史李，李逮捕了严庄的宗族，把他们全部杀掉。
禄山以海运使刘道玄摄景城太守，清池尉贾载、盐山尉河内穆宁共斩道玄，得其甲仗五十馀船；携道玄首谒长史李，收严庄宗族，悉诛之。
An Lushan had Liu Daoxuan, the director of the Maritime Transport Office, act as the governor of Jingcheng. Jia Zai, the magistrate of Qingchi County, and Mu Ning, the magistrate of Yanshan County, from the Hebei area, joined forces to kill Liu Daoxuan. They obtained over fifty ships of armor and weapons. Then they went to see Prefect Li with Liu Daoxuan's head, and Li arrested Yan Zhuang's clansmen and executed them all.