《资治通鉴·唐纪·唐纪六》
突厥与梁师都相互勾结，派郁射设进入唐境，居住在原先的五原，李道宗把郁射设赶出五原，并开拓了一千多里的领土。
突厥与师都连结，遣其郁射设入居故五原，道宗逐出之，斥地千馀里。
The Turks and Liang Shidu colluded with each other and sent Yishe to enter the Tang territory and settle in the former Wuyuan. Li Daozong drove Yishe out of Wuyuan and expanded his territory by more than a thousand li.