《明史·本纪·卷十三》
十二月七日，出现彗星，下诏自责，命群臣修身反省，陈述时政得失。
十二月甲戌，彗星见，下诏自责，敕群臣修省，条时政得失。
On the 7th of December, a comet appeared; issued an edict to blame oneself, ordered all officials to cultivate their virtue and reflect, and to state the merits and demerits of contemporary governance.