《资治通鉴·陈纪·陈纪十》
沙钵略可汗十分高兴，于是与隋朝订立盟约，以砂碛作为两国的分界，因崐此上表说： 天无二日，地无二主，大隋皇帝是真正的皇帝，我岂敢再凭恃险隘，阻兵抗命，窃取名号，妄称天子！
沙钵略大喜，乃立约，以碛为界，因上表曰： 天无二日，土无二王。大隋皇帝，真皇帝也！岂敢阻兵恃险，偷窃名号！
Shaboli Khan was very happy, so he made an alliance with the Sui Dynasty, set the sand dunes as the boundary between the two countries, and said in the memorial: "There are not two suns in the sky, there are not two emperors on the earth. The emperor of the great Sui Dynasty is the real emperor. How dare I rely on the dangerous terrain, resist the order by force, and usurp the title of the emperor!