《资治通鉴·后唐纪·后唐纪二》
当初，李嗣源北征契丹时，路过兴唐，东京的武库中有供给皇帝用的精细的铠甲，李嗣源写了牒文给副留守张宪，取走五百具铠甲，张宪因军队在行军中，没有时间奏告后唐帝就给了李嗣源。后唐帝知道这件事后很生气地说： 张宪不遵守诏令，擅自把我的铠甲给了李嗣源，这是什么意思？ 
初，李嗣源北征，过兴唐，东京库有供御细铠，嗣源牒副留守张宪取五百领，宪以军兴，不暇奏而给之；帝怒曰： 宪不奉诏，擅以吾铠给嗣源，何意也！ 
In the past, when Li Sizhen went north to conquer the Khitan, he passed by Xing Tang. There was exquisite armor for the emperor in the armory of Dongjing, and Li Sizhen wrote a letter to Deputy Shouzhang Xian, taking away 500 armors. Due to the fact that the army was on the march, Zhang Xian had no time to report to the Tang emperor, and he gave it to Li Sizhen. When the Emperor of Later Tang heard about this, he was very angry and said, "Zhang Xian did not follow the edict and gave my armor to Li Sizhen without authorization. What does this mean?"