《明史·志·卷三十六》
皇祖制定的礼仪，没有全文，每次遇到皇帝、皇后的丧事，也不免因袭举行礼仪。
皇祖所定，未有全文，每遇帝后之丧，亦未免因仍为礼。
The rituals set by the royal ancestors have no complete text, but each time when there was an emperor's or empress' funeral, rituals were carried out according to the predecessors.