《新唐书·列传·卷三十六》
郭待封曾任鄯城镇守，跟薛仁贵官阶相同，到这时，为当薛仁贵的部下感到羞耻，非常不听指挥。
侍封尝为鄯城镇守，与仁贵等夷，及是，耻居其下，颇违节度。
Guo Daifeng had been the governor of Shanheng City and had the same rank as Xue Rengui. By this time, he felt ashamed to be under the command of Xue Rengui and often contradicted him.