《旧唐书·列传·卷四十八》
杜暹在家孝敬长辈爱弟妹，对他继母弟杜昱爱抚甚厚，但是昱平素不学无术，每当朝谈论，言谈肤浅。
暹在家孝友，爱抚异母弟昱甚厚。然素无学术，每当朝谈议，涉于浅近。
Du Xian was filial to his elders and loving to his younger brothers and sisters, and he was especially affectionate towards his stepmother's brother Du Yu, but Yu was usually unlearned and shallow in his words when discussing matters at court.