《明史·列传·卷一百八十七》
思恭从容进言曰 ：臣前奉命为晋王治病，告诉晋王，现在虽愈，但毒入膏肓，若再发恐难治愈了，如今果然。 
思恭从容进曰： 臣前奉命视王疾，启王曰： 今即愈，但毒在膏肓，恐复作不可疗也。 今果然矣。 
Sigong calmly said: Your minister previously obeyed the imperial orders and treated Prince Jin, and told Prince Jin that although the illness was now cured, but the poison had already spread throughout his body, and if it relapses it will be very difficult to cure, and now this has actually happened.