《资治通鉴·后唐纪·后唐纪一》
泽州、潞州尚未攻下，卢文进、王郁率领契丹人曾多次经过瀛、涿的南面，传说等到草枯结冰就进一步深入后唐境。
泽潞未下。卢文进、王郁引契丹屡过瀛、涿之南，传闻俟草枯冰合，深入为寇。
Zezhou and Luzhou had not yet been captured and Lu Wenjin and Wang Yu had often led the Khitan people south of Ying and Zhuo. It was rumored that they would penetrate further into the territory of Hou Tang once the grass had withered and the rivers frozen.