《新唐书·列传·卷四十九》
三次任宰相，常兼职兵部，所以对边哨、军营分布、部队械储，没有不熟记于心的。
三为宰相，常兼兵部，故屯戊斥候、士马储械，无不谙记。
He served as Prime Minister three times and concurrently served in military positions, so he was very familiar with the deployment of outposts, military camps, and military equipment.