《六韬·虎韬·火战》
武王询问太公说： 率领军队深入敌国境内，遇到茂密的草丛树木围绕在我军前四周，我军队伍已行军数百里，人马困乏疲惫，迫切需要修整。
武王问太公曰： 引兵深入诸侯之地，遇深草蓊秽，周吾军前后左右，三军行数百里，人马疲倦休止。
King Wu asked Taigong: Leading an army deep into enemy territory, we encountered dense grass and trees surrounding us in front of our army, our army had marched hundreds of miles, and our men and horses were exhausted and tired, and urgently need to rest.