《资治通鉴·唐纪·唐纪四》
唐陕东道行台的左仆射屈突通的两个儿子都在洛阳，皇上对屈突通说： 现在想让你东征洛阳，你的两个儿子怎么办？ 
陕东道行台屈突通二子在洛阳，上谓通曰： 今欲使卿东征，如卿二子何？ 
The two sons of Qu Tutong, the Zuo Pushi of the Xingtai in Tang Shaandong, were both in Luoyang. The emperor said to Qu Tutong: I now want you to go east to conquer Luoyang. What will happen to your two sons?