《资治通鉴·汉纪·汉纪六十》
城内将士有拼死抗争之心，城外有强大的救援，大王您控制六军，显示我们还有多余的军力，何必担心失败而亲自出征？ 
内怀死争，外有强救，大王案六军以示馀力，何忧于败而欲自往？ 
Inside the city the generals and soldiers wish to fight to the death, outside the city there is powerful relief, Your Highness you control six divisions, showing that we have extra troops, why worry about failure and personally lead an expedition?