《资治通鉴·汉纪·汉纪四十八》
本来规划三年的经费，支用五十四亿，迄今一载，消耗不到一半，然而，残余的叛羌，已象灰烬一样，濒临灭绝。
本规三岁之费，用五十四亿；今适期年，所耗未半，而馀寇残烬，将向殄灭。
The funds originally planned for three years, at a cost of 5.4 billion, have now been used for less than half of the year, yet the remaining rebellious Qiangs are on the verge of extinction, like ashes.