《资治通鉴·唐纪·唐纪六十九》
这时，河南地区的盗贼纷纷起兵，云州沙陀兵马使李尽忠与牙将康君立、薛志勤、程怀信、李存璋等人谋划说： 当今天下大乱，唐朝廷的号令不再能行四方。这正是英雄树立功名、获取富贵的好时机。
时河南盗贼蜂起，云州沙陀兵马使李尽忠与牙将康君立、薛志勤、程怀信、李存璋等谋曰： 今天下大乱，朝廷号令不复行于四方，此乃英雄立功名富贵之秋也。
At this time, bandits in Hebei province rose up in arms, and Li Jinzhong, the Sha Tuo Army Governor of Yunzhou, and his generals Kang Junli, Xue Zhiqin, Cheng Huaixin, and Li Cunzhang plotted and said: "The world is in chaos today, and the imperial edicts of the Tang Dynasty can no longer be promulgated everywhere. This is a good time for heroes to establish merits and gain wealth and honor.