《资治通鉴·唐纪·唐纪五十四》
敕书称： 有关复仇的规定，若根据《礼记》的说法，在道理上说与仇人应是不共戴天的，但若引证法令条文，杀人的人就应当处以死刑。
敕： 复仇，据《礼经》则义不同天，征法令则杀人者死。
The imperial edict stated: According to the regulations regarding revenge, if we rely on the Book of Rites, in theory, the enemy and oneself should be at odds; however, if we cite the strictures of the law, the murderer should certainly be sentenced to death.