《旧唐书·本纪·卷十三》
冬十月六日，兴元严砺迎合监军旨意，上奏诬告发配的通州别驾崔河图有罪，结果将他远远地流放到崔州，赐他自杀，人们为此而伤感。
冬十月辛未，兴元严砺希监军旨，诬奏流人通州别驾崔河图，长流崖州，赐死，人士伤之。
On the 6th day of the tenth month of winter, Yan Li of Xing Yuan welcomed the wishes of the military supervisor and falsely accused in a memorial that Cui Hetu of Tong Zhou had committed a crime. He was sent far away into exile in Cui Zhou and given the suicide. Those who knew him mourned him.