《资治通鉴·唐纪·唐纪三十三》
这时有入朝奏事官从京师回来，安禄山就假造敕书，把将领都召来告诉他们说： 皇上有密诏给我，让我率兵入朝讨杨国忠，你们应该听我指挥随军行动。 
会有奏事官自京师还，禄山诈为敕书，悉召诸将示之曰： 有密旨，令禄山将兵入朝讨杨国忠，诸君宜即从军。 
At this time, an official who entered the court to report the incident came back from the capital. An Lushan forged an imperial edict and summoned all the generals to tell them: "The emperor has a secret decree to me, asking me to lead the army into the court to discuss Yang Guozhong. You should listen to my command to act with the army.  