《宋史·列传·卷八十三》
枢密院要求弹劾李允则不救火的罪状，真宗说 ：允则对这件事一定有什么话要说，让我们先问一问他。 李允则对皇上说 ：兵械库一向戒备森严，为什么刚好在宴会时烧起来了呢？
枢密院请劾不救火状，真宗曰： 允则必有谓，姑诘之。 对曰： 兵械所藏，儆火甚严，方宴而焚，必奸人所为。
The Privy Council asked to impeach Li Yunze for not fighting the fire, but Emperor Zhenzong said: Yunze must have something to say about this matter, let us ask him first. Li Yunze said to the Emperor: The armory has always been heavily guarded, why did it happen to burn down during the banquet?