《旧唐书·本纪·卷九》
九日，哥舒翰至潼关，被其帐下将火拔归仁凭借跟随的数十骑兵将他捉住，投降了叛贼，潼关大门失守，京师惊骇，河东、华阴、上洛等郡都弃城而逃。
辛卯，哥舒翰至潼关，为其帐下火拔归仁以左右数十骑执之降贼，关门不守，京师大骇，河东、华阴、上洛等郡皆委城而走。
On the 9th, Geshu Han arrived at Tongguan. Heo Ba Guiiren, a general under Geshu Han’s command, captured Geshu Han with the dozen of cavalrymen who followed him and Geshu Han surrendered to the rebels. Tongguan fell, Chang’an was shocked and the prefectures of Hedong, Huayin and Shangluo abandoned their cities and fled.