《墨子·22章 节用(下)》
然后伯父、叔父、兄弟、自己的众庶子死了服丧一年；近支亲属死了服丧五个月；姑父母、姐姐、外甥、舅父母死了，服丧都有一定月数，那么，丧期中的哀毁瘦损必定有制度规定了。
然后伯父、叔父、兄弟、孽子其；族人五月；姑姊甥舅皆有月数，则毁瘠必有制矣。
Then, after the mourning period for one's paternal uncles, maternal uncles, brothers, or children are added in, there is mourning for one year. For one's closest relatives, there is mourning for five months. And for one's aunts, sisters, nephews, and maternal and paternal uncles, there is a fixed period of mourning. That means the physical symptoms of mourning will be subject to certain regulations.