《宋史·本纪·卷八》
二十九日，真宗身体不适，勉强到承明殿，赐给宰相手书，告谕辅佐皇太子治国的道理。
乙亥，帝不豫，力疾御承明殿，赐手书宰相，谕以辅导储贰之意。
On the 29th, Zhenzong was feeling unwell, and after much effort, he arrived at the Chengming Hall to bestow an imperial decree on the prime ministers, instructing them on the principles of assisting the crown prince in governing the country.