《尚书·夏书·甘誓》
兵车左边的兵士不善于射箭，你们就是不奉行我的命令；车右的兵士不善于用戈矛刺杀敌人，你们也是不奉行我的命令；驾车的兵士违反驭马的规则，你们也是不奉行我的命令。
左不攻于左，汝不恭命；右不攻于右，汝不恭命；御非其马之正，汝不恭命。
The soldiers on the left of the war chariots are not good at archery, you are not following my commands; the soldiers on the right of the chariots are not good at stabbing the enemy with halberds, you are also not following my commands; the soldiers who drive the war chariots break the rules of horsemanship, you are also not following my commands.