《资治通鉴·陈纪·陈纪十》
但是可贺敦是隋文帝的女儿，那么可汗您就是大隋天子的女婿。女婿怎么能不尊敬岳父！ 
但可贺敦为帝女，则可汗是大隋女婿，奈何不敬妇翁！ 
However, Princess Yicheng is the daughter of Emperor Wen of Sui, so you, Khagan, are the son-in-law of the Emperor of Great Sui. How can a son-in-law not respect his father-in-law?