《新唐书·列传·卷六十四》
碰上房琯请求自己率兵讨平叛贼，皇帝还想依靠他完成这一大业，就下诏命房琯持符节任招讨长安，防御蒲、潼两关兵马节度使，能自己选择幕僚和将领。
会琯请自将平贼，帝犹倚以成功，乃诏琯持节招讨西京、防御蒲潼两关兵马节度等使，得自择参佐。
When Fang Guan requested to lead the army to quell the rebellion, the emperor, who still wanted to rely on him to complete this great undertaking, issued an imperial edict ordering Fang Guan to hold the符节 (a credential) and to be the Recruiter of Chang'an and the Military Governor of Pu and Tong Passes, and to be able to select his own staff and generals.