《北史·列传·卷三十》
再则，《礼经》《内则》篇说： 子女侍奉父母，鸡刚叫，就起来给父母梳头，扎头，插上簪子。 
又《礼内则》称： 子事父母，鸡初鸣，栉纚笄总。 
Then, the chapter on 《Household Rules》 in 《Book of Rites》 states, “Children serve their parents. As soon as the rooster crows, they get up, comb the parents’ hair, tie it up, and insert hairpins.”