《资治通鉴·唐纪·唐纪三十八》
当时回纥已经调动军队到三受降城，看到州、县都成为废墟，产生了瞧不起唐朝的念头，于是困辱刘清潭。
回纥业已起兵至三城，见州、县皆为丘墟，有轻唐之志，乃困辱清潭。
At that time, the Uyghurs had mobilized their troops to Sangou Town. Seeing that the prefecture’s and county’s areas were in ruins, they started to look down on the Tang dynasty. Thus, they made things difficult for Liu Qingtan.