四分律行事鈔資持記 3.672

3.672

五中，初科，前明共坐限齊。若下，次明床敷大小，有三，初明床座。臥床三人坐者，謂減三肘者。坐床肘半，二尺七寸；若減併與者，不容並坐故。臥床過三肘者，五尺四已上，三人有餘，故加至四；降四歲者，如六歲得共十歲坐也。大會得連床者，一以床少，二不許動，故暫開之。若方下，次明氈褥。準前床量。若散下，後明敷草。由無限量，故得共坐。

In the fifth [part], the first section: earlier it clarifies the limits of sitting together. From "If..." downward, next it clarifies the size of the couches and mats, which has three points: first, clarifying seats and couches. When three people sit on a sleeping couch, it refers to one of less than three cubits. A sitting couch is one and a half cubits, two feet seven inches; if it is reduced and given jointly, they cannot sit side by side. When a sleeping couch exceeds three cubits, being five feet four inches or more, there is room to spare for three people, hence it is increased to four; "descending four years" means, for example, a six-year monk being permitted to sit together with a ten-year monk. In a great assembly, they are permitted to join couches: first because couches are scarce, and second because moving them is not allowed, hence it is temporarily permitted. From "If square..." downward, next it clarifies felt rugs. Follow the measurements of the couches above. From "If scattering..." downward, finally it clarifies spreading grass. Because it has no restricted measurement, they may sit together.