《资治通鉴·后汉纪·后汉纪一》
契丹主又召见原后晋的文武百官，告谕他们说： 天时渐渐热起来，我难以久留此地，想暂时北归辽国看望太后。
契丹主复召晋百官，谕之曰： 天时向暑，吾难久留，欲暂至上国省太后。
The leader of the Khitan summoned the former minister and military officers, and told them: It is gradually becoming warmer. I can't stay here long and wish to return to Liao to visit the empress dowager.