《资治通鉴·后晋纪·后晋纪一》
后晋高祖与契丹主将要领兵向南进军，想留下他的一个儿子戍守河东，征求契丹主的意见。契丹主让后晋高祖把他的儿子都叫出来，由他自己选择。
帝与契丹主将引兵而南，欲留一子守河东，咨于契丹主，契丹主令帝尽出诸子，自择之。
The founding emperor of Later Jin and the head of the Khitan tribe wanted to lead a southward advance, and wanted to leave a son to garrison Hedong. He asked the Khitan chieftain for his opinion. The Khitan chief asked the founding emperor of Later Jin to call out all his sons, and he would make the choice himself.