《资治通鉴·唐纪·唐纪六十六》
夏季，四月，王式率大军束到柿口，义成军的军容不整，王式想把领兵将领斩首，过了一段又把他释放，于是军队号令齐一，队形整齐，所过这处如入无人之境。
夏，四月，式行至柿口，义成军不整，式欲斩其将，久乃释之，自是军所过若无人。
In the summer, the fourth month, Wang Shi led a large army to Shikou, the Yicheng army was in disarray, and Wang Shi wanted to kill the general in command, but spared him later, so the army obeyed orders and marched in formation, wherever they went they met no resistance.