《资治通鉴·唐纪·唐纪五》
士卒走光以后，齐善行和夏国的仆射裴矩、行台曹旦，带领百官奉窦建德的妻子曹氏和传国八玺以及打败宇文化及时得到的珍宝，向唐请求投降。
士卒散尽，然后与右仆射裴矩、行台曹旦，帅其百官奉建德妻曹氏及传国八玺，并破宇文化及所得珍宝，请降于唐。
After the soldiers were gone, Qi Shanxing, Pei Ju, and Xingtai Cao Dan, the servants of Xia Guo, led hundreds of officials to escort Dou Jiande's wife Cao family, the eight seals of the kingdom, and the treasures obtained after defeating Yu Huaji to ask the Tang Dynasty to surrender.