《资治通鉴·唐纪·唐纪四十七》
德宗认为新近才将京城收复，一定要使动荡不安的局面安定下来，因而没有答应。
上以新复京师，务安反仄，不许。
The Emperor Dezong thought that since Chang'an had only just been recovered, it was vital to allow the situation to settle down, and so refused.