《旧唐书·列传·卷四》
窦建德大怒说 ：我已兵临城下，他还执迷不悟不肯投降，使我的部队吃了苦头，死罪怎么能够赦免？ 
建德盛怒曰： 我至城下，犹迷不降，劳我师旅，罪何可赦？ 
Dou Jiande flew into a rage and said: "I have already arrived beneath the city walls. He has refused to surrender even when he has reached his end. He has caused my troops misery. How can this capital crime be pardoned?"