《旧唐书·列传·卷八十三》
兵将官吏都说这是不杀李造成的，每天都有书信要求杀李，并且说抓到叛军的探子都供说李诈降。
军吏咸以不杀祐为言，简翰日至，且言得贼谍者具言其事。
The troops, officers, and officials all said this was the result of not executing Li, and they sent appeals every day demanding that Li be killed, and they also said that the captured spies from the rebel army all testified that Li had surrendered under false pretenses.