《仪礼·既夕礼》
饭含完毕，夏祝撤去剩余之米。接着用丝绵塞住死者两耳。于堂下东西两阶间掘坎，南北向；坎宽一尺，长二尺，深三尺；掘坎之上堆于坎的南侧。
掘坎，南顺，广尺，轮二尺，深三尺；南其壤。
When the feeding is complete, the leftovers are removed by the summer official. The dead person's ears are then stuffed with raw silk. A pit is dug between the two steps on the east and west sides of the hall, running from north to south; the pit is one foot wide, two feet long and three feet deep; the earth dug from the pit is piled to the south side of the pit.