《后汉书·列传·邓张徐张胡列传》
建初年间，有人侮辱人家的父亲，而那人的儿子把他杀了，肃宗宽其死刑而降等处理，从此以后把这事作为例子。
建初中，有人侮辱人父者，而其子杀之，肃宗贳其死刑而降宥之，自后因以为比。
During the period of Jianchu, someone insulted another person’s father, and the son killed him. Emperor Su dismiss the death sentence and gave him a lesser punishment. From that time on, this became a case in point.