《新唐书·列传·卷三十八》
当时，在殿上的朝臣和保卫、仪仗人员几百人，都缩起脖子不敢呼吸，但是徐有功神情镇定，说话从容，屹立不屈。
当此时，左右及卫仗在廷陛者数百人，皆缩项不敢息，而有功气定言详，闉然不桡。
At that time, the officials and personal guards and personnel in attendance in the imperial court, numbering several hundred people, all drew in their necks and dared not breathe, but Xu Yougong remained composed, spoke calmly, and stood his ground.