四分律刪繁補闕行事鈔 1.120

1.120

若聚落有僧不可知者。《僧祇》中：若城邑、聚落，界分不可知者，用五肘弓，七弓種一樹；齊七樹相去，使異眾相見，不犯別眾，各得成就。準相通計，七樹六間，得六十三步。不同前解，七間七十三步半，如《義鈔》廢立。

If there is a saṃgha in a village whose boundaries cannot be known: In the Mahāsāṃghika-vinaya: 'If the boundary divisions of a city or village cannot be known, use a bow of five cubits, planting one tree every seven bows; across seven trees of separation, so that the different assemblies can see each other, they do not commit the offense of a separate saṃgha, and each succeeds [in its karman].' Calculating according to the markers, seven trees have six intervals, yielding sixty-three paces. This differs from the former explanation of seven intervals yielding seventy-three and a half paces, as resolved and established in the Yichao.