《旧唐书·本纪·卷二十》
当时朝臣们的看法，认为李茂贞傲视、轻侮皇上的命令，统兵的武将难以驾驭。想要任用杜让能和亲王统率禁军，所以革去了五名禁军将领的兵权，让他们兼任平章政事，使他们心里高兴。
时朝议以茂贞傲侮王命，武臣难制，欲用杜让能及亲王典禁兵，故罢五将之权，兼以平章事悦其心。
At that time, the court officials believed that Li Maozhen saw the emperor's orders with contempt and scorn and that it was difficult to control military generals. They wanted to appoint Du Rangneng and the prince to oversee and command the imperial guards, so they revoked the military power of the five military generals of the imperial guards and made them concurrently serve as Pingzhang Zhenshi, so that they would be pleased.