《旧唐书·本纪·卷十九》
贼军围困泗州的形势危急，淮南节度使令狐担心失陷泗口，受到贼军冲击，命令大将李湘前去救援。李湘受到贼军诱惑，表现软弱，乞求投降，贼军乘他不防备进行偷袭，结果全军覆没。
贼攻泗州势急，淮南节度使令狐綯虑失泗口，为贼奔冲，乃令大将李湘赴援，为贼所诱，示弱乞降，乘其无备，为贼所袭，举军皆没。
The situation of the rebel army encircling Sizhou was critical. The Huainan Jiedushi Li Shi was worried about losing the Sikou, and being attacked by the rebel army. He ordered his general Li Xiang to rescue them. Li Xiang was tempted by the rebel army and acted weak, begging to surrender. The rebel army took advantage of his unpreparedness and launched a surprise attack, resulting in the destruction of the entire army.