《睡虎地秦墓竹简·其于部分·法律答问》
私家奴婢笞打自己之子，子因此患病而死，应有额上和颧部刺墨，然后交还主人。
人奴妾治子，子以死，黥顏頯，畀主。
A private servant or maid who whips his or her own child, causing him or her to fall ill and die, should be tattooed on the forehead and cheekbones and then returned to their owner.