《周礼·夏官司马·虎贲氏&道右》
把棺柩下入墓穴时也这样击鼓。悬挂丧服的首服的法式在宫门前，使人们依此而服。
窆亦如之，县丧首服之法于宫门，掌三公孤卿之吊劳。
The same is true when the coffin is lowered into the tomb. The first form of mourning clothes is hung in front of the palace gate, so that people can follow suit.