《旧唐书·列传·卷九十一》
田承嗣拒不接受诏令，派大将卢子期攻打氵名州，杨光朝攻打卫州，杀害刺史薛雄，逼迫孙知古巡察磁州、相州，暗示他的大将用割耳破脸的举动向他表示忠心，恳请田承嗣做他们的统帅，孙知古无法驳诘。
承嗣不奉诏，遣大将卢子期攻洺州，杨光朝攻卫州。杀刺史薛雄，仍逼知在令巡磁、相二州，讽其大将割耳剺面，请承嗣为帅，知在不能诘。
Tian Chengsi refused to accept the decree and sent the general Lu Ziqi to attack Mingzhou, and Yang Guangchao to attack Weizhou, killing the governor Xue Xiong and forcing Sun Zhigu to inspect Cizhou and Xiangzhou, hinting that his general would express his loyalty to him by cutting off his ears and breaking his face, begging Tian Chengsi to be their commander, Sun Zhigu could not refute.