四分律行事鈔資持記 3.100

3.100

Under "Intent of Prohibition", first it shows the intent. "For the body" means fearing that sitting on the ground might cause injury; next, "for the robes" means fearing that without something to sit upon, the three robes would be easily ruined; "for bedding" means fearing that if the body is unclean, it would soil the monastic beds and couches. From "Length..." downward, it shows the dimensions. In the note, it previously showed the proper form. "Accordance with Dharma" means conforming to character dictionaries. If following the Precept Commentary, deriving it from the "stone" radical is correct, meaning to stretch out. From "Foot..." downward, it points out errors. One span of the Buddha is two feet long, so two spans are four feet; a span and a half wide is three feet—this is the originally prohibited measure. As for further increasing it, in the Vinaya, because Udāyin's body was large and he spoke of it to the Buddha, he was permitted to increase both length and width by half a span. The Precept Commentary says: "Further increasing" is an exceptional circumstance; returning from the original prohibition, an exception is made outside the limit. (Meaning increasing it outside the limit of the originally prohibited measure.)