《旧唐书·列传·卷四》
元文都对卢楚等人说： 如今宇文化及杀君叛逆，仇未报耻未雪，我虽然复仇心切，但力不从心。
文都谓楚等曰： 今化及弑逆，仇耻未报，吾虽志在枕戈，而力所不及。
Yuan Wendu said to Lu Chu and others: Now that Yuwen Huaji has killed the king and rebelled, the hatred has not been reported and the shame has not been ashamed. Although I am eager to take revenge, I am weak.