《资治通鉴·晋纪·晋纪二十八》
苻登带领五万军队，东进攻打后秦，将士们全都在头盔铠甲上刻了 死 、 休 二字，每逢战斗都用剑矛组成方圆大阵，知道了力量分布不均后，再重新调整，所以人人各自为战，所向无敌。
引兵五万，东击后秦，将士皆刻鉾、铠为 死  休 字；每战以剑槊为方圆大阵，知有厚薄，从中分配，故人自为战，所向无前。
Fu Deng led an army of 50,000 eastward to attack the Later Qin. The soldiers and generals all engraved the characters "Death" and "Rest" on their helmets and armor. Every time they fought, they formed a square and round formation with their swords and spears. After realizing that the distribution of power was uneven, they would readjust. Therefore, everyone fought independently and was invincible.