《新唐书·列传·卷一百四十七》
皇帝授使者为折冲，任其君王为左威卫大将军，赐给紫袍、金钿带。
商贾往来所凑集，俗与堕罗钵底同。
The emperor appointed the emissary as a 'zhechong' and named the prince as the Grand General of the Left Wing Wei Garrison, granting him a purple robe and a golden belt.