《资治通鉴·唐纪·唐纪三十九》
代宗正为仆固怀恩的事忧虑，于是，召见李抱真询问对策。李抱真回答说： 陛下不必忧虑这件事。
上方以怀恩为忧，召见抱真问计，对曰： 此不足忧也。
Emperor Daizong was worried about the matter of Pugu Huai'en, so he summoned Li Baozhen to ask for advice. Li Baozhen replied: Your Majesty does not need to worry about this matter.