《新唐书·列传·卷六十九》
裴冕遭诬蔑，皇帝怀疑他，派使者来了解情况，崔宁部下士兵割下耳朵来申诉他的冤枉，使者将这情况汇报了。
冕被谤，朝廷疑之，遣使者问状，宁部兵耳白其冤，使者以闻。
Pei Mian was falsely accused, and the emperor suspected him. He sent an envoy to investigate the situation, and Cui Ning’s soldiers cut off their ears to show that he was innocent. The envoy reported this back to the emperor.