《资治通鉴·唐纪·唐纪四十七》
德宗又就势说： 关中粮食缺乏，回去告诉你父亲，最好快速把粮食运来。 
因言： 关中乏粮，归语卿父，宜速致之。 
Emperor Dezong then took the opportunity to say: Guanzhong has a shortage of grain. Go and tell your father to send grain here as quickly as possible.