《资治通鉴·唐纪·唐纪三十四》
而现在大军被阻于潼关，数月不能攻破，北归的路也被断绝，官军大集，我们所占据的只有汴州、郑州等几个州郡，如何能够取胜呢？
今守潼关，数月不能进，北路已绝，诸军四合，吾所有者止汴、郑数州而已，万全何在？
"But now the army has been stopped at Tongguan Pass for several months and has not been able to break through. The route back north has also been cut off. The imperial army has gathered in large numbers. We only occupy a few prefectures and counties such as Bianzhou and Zhengzhou. How can we possibly win?"