《资治通鉴·唐纪·唐纪三》
夏侯端到黎阳，李世派兵护送他，从澶渊渡过黄河，传递檄文到各州县，东至海，南到淮河，二十多个州县，均派使者前来降唐。
夏侯端至黎阳，李世勣发兵送之，自澶渊济河，传檄州县，东至于海，南至于淮，二十馀州，皆遣使来降。
Xiahou Duan arrived at Liyang. Li Shi dispatched soldiers to escort him, crossed the Yellow River from Zhanyuan, and sent manifestos to various states and counties, from the east to the sea and from the south to the Huai River. More than two dozen states and counties sent messengers to surrender to Tang.