《礼记·杂记下》
夫家如果连族人也没有，那就请前后左右的邻居主丧；如果前后左右邻居也没有，那就请里尹来主持。
夫若无族矣，则前后家，东西家；无有，则里尹主之。
If the spouse's clan has no relatives, then invite the neighbors living in front, back, left, and right to perform the rites for the deceased; If the neighbors living in the front, back, left, and right also have no relatives, then invite the Lizheng to perform the rites.