《资治通鉴·唐纪·唐纪五》
唐车骑将军白土让、杨武威追逐窦建德，窦建德落马，白土让挺枪欲刺，窦建德说： 别杀我，我是夏王，献上我可以使你们得到富贵荣华。 
车骑将军白士让、杨武威逐之，建德坠马，士让援槊欲刺之，建德曰： 勿杀我，我夏王也，能富贵汝。 
Tang's chariot cavalry general Baiturong and Yang Wuyi chased after Dou Jiande. Dou Jiande fell off his horse, and Baiturong aimed a spear at him. Dou Jiande said, "Don't kill me. I'm the summer emperor. If you give me up, you'll be rich and powerful."