《礼记·丧大记》
为国君服丧，异姓的大夫要等到练祭以后才可回家，异姓的士要等到卒哭以后才可回家。
公之丧，大夫俟练，士卒哭而归。
Mourning for the emperor, a doctor with a different surname must wait until after the practice sacrifice before returning home, and a scholar with a different surname must wait until after the funeral to return home.