《辽史·列传·卷二十八》
兀纳奏道 ：我私下听说皇上出游，准备留下皇孙，倘若保护者不称职，恐怕会生变故。
兀纳奏曰： 窃闻车驾出游，将留皇孙，苟保护非人，恐有他变。
Wu Na argued: “I heard in private that the Emperor is going out on a trip and is planning to leave the crown prince behind. If the guardian is not competent enough, I’m afraid there will be an accident.”