《资治通鉴·唐纪·唐纪三十七》
荔非元礼考虑到叛军的战阵坚固，难以轻易摧垮，就领兵退了下来，想等到叛军大意的时候再进攻。
元礼度贼阵坚，未易摧陷，乃复引退，须其怠而击之。
Li Fei Yuanli thought that the rebel's battle formation was strong and difficult to be defeated, so he led his troops to retreat, intending to wait until the rebels were careless and then attack again.