《后汉书·列传·郭杜孔张廉王苏羊贾陆》
近来调遣军队，只用玺书或者诏令，如果有奸人伪造，就无法察觉出来。
间者发兵，但用玺书，或以诏令，如有奸人诈伪，无由知觉。
 Recently, deploying the army only uses imperial edicts or edicts. If there are traitors who forge them, they will not be detected.