《资治通鉴·唐纪·唐纪四十七》
丁酉，李晟再次出兵，各将领请求等待西面的浑军赶到后夹攻敌军，李晟说： 贼军屡次失败，已经吓破了胆，不乘胜攻取敌军，而使他们作好防备，这不是良策。 
丁酉，晟复出兵，诸将请待西师至，夹攻之。晟曰： 贼数败，已破胆，不乘胜取之，使其成备，非计也。 
On Dingyou, Li Sheng dispatched troops once again. The generals requested that they wait until Hun's army from the west arrived before launching a pincer attack on the enemy, but Li Sheng said: "The rebel army has suffered repeated defeats and is terrified. If we do not take advantage of our victory to attack them now and instead allow them to prepare their defenses, that would not be a good strategy."