《元史·本纪·卷三十二》
中书省官员上言说： 上都诸王和大臣，不顾及祖宗成规，迷惑于奸臣倒剌沙的言语，竟率兵进犯京师。
中书省臣言： 上都诸王、大臣，不思祖宗成宪，惑于奸臣倒剌沙之言，辄以兵犯京畿。
An official from the Zhongshu Province said: "The kings and ministers of Shangdu disregarded the ancestral rules, were misled by the words of the traitorous official Daola Sha, and even led the soldiers to invade the capital."