《元史·列传·卷六十三》
若愚以孟子对齐宣王的花园占地方圆四十里，杀麋鹿的如杀人一样处以死罪这一事进行的批评，来反对对百姓田猎处以死刑的错误规定。
若愚曰： 昔齐宣王之囿，方四十里，杀其麋鹿者，如杀人之罪，孟子非之。 众以为然，遂轻其刑。
Ruo Yu criticized the wrong clause of punishing civilians' hunting by death with the story that Mencius criticized King Xuan of Qi for occupying the land of forty square miles with gardens and killing an elk as killing a person.