《北史·列传·卷三十五》
斛律光曾经对各位将领说： 边境上的情况，如何调动兵马，中书令赵彦深常同我们这些人商议。
尝谓诸将云： 边境消息，处分兵马，赵令恆与吾等参论之。
Hulü Guang once said to his generals: As for the situation at the border and how to mobilize troops, the Minister of the Imperial Secretariat, Zhao Yan’shen, often consults with us.