《明史·本纪·卷十一》
十二日，景帝带病登车住南郊斋宫，十四日，群臣请求立太子。景帝不听。
丁丑，帝舆疾宿南郊斋宫。己卯，群臣请建太子，不听。
On the twelfth day, Emperor Jing, despite being ill, drove to Nanjiao齋宮. On the fourteenth day, all the ministers requested that he appoint a crown prince. The emperor did not comply.