《资治通鉴·汉纪·汉纪四十四》
军队战斗的地方，死亡的人一定很多，即然抵御不了敌人的进攻，就将再次征调援兵，这就犹如挖割心腹去补四肢，这是不可征发的第六个理由。
设军所在，死亡必众，既不足御敌，当复更发，此为刻割心腹以补四支，其不可六也。
Where the army fights, many people will die, and if they cannot withstand the enemy's attack, they will have to send for reinforcements again, which is like cutting up the heart and belly to fill the limbs, this is the sixth reason why they can't be conscripted.