《汉书·传·匈奴传下》
孝武皇帝即位，在马邑设谋埋伏，想诱歼匈奴，派韩安国率领三十万军队在边地截击，匈奴发觉后退去了，汉朝白白浪费了资财，军队的辛劳也白费一场，一个匈奴人也没有见到，何况是单于！
孝武即位，设马邑之权，欲诱匈奴，使韩安国将三十万众徼于便地，匈奴觉之而去，徒费财劳师，一虏不可得见，况单于之面乎！
Emperor Xiaowu ascended to the throne and planned an ambush at Mayi, intending to lure and annihilate the Xiongnu. He sent Han Anguo to lead an army of 300,000 to intercept them at the border, but the Xiongnu discovered the plan and retreated. The Han Dynasty wasted money and effort, and they did not even see a single Xiongnu, let alone the Chanyu!