SuttaCentral
What is the “rule concerning cutting” (chedanake pācittiya) mentioned in Kd 22?
“Are sitting mats without borders allowable?”—“No.”—“Where was it prohibited?”—“At Sāvatthī, in the analysis of the Monastic Code.”—“What was committed?”—“An offense entailing confession in relation to the rule concerning cutting.”
Thank you 
The 89th pācittiya rule.
If a monk is having a sitting mat made, it should be made the right size. This is the right size: two standard handspans long and one-and-a-half wide, and a border of one handspan. If it exceeds that, it is to be cut down, and he commits an offense entailing confession.
Bhante @Brahmali, Would you consider adding this into your note? I went there expecting to see a link to the rule but I don’t think there is one.
Thank you Venerable
So I take it Venerable Sabbakāmī interpreted the rule to mean that sitting mats must have a border?
The other nine practices proposed in Kd 22 all seem to lean towards the side of indulgence, hence the need for the council, so I’m a bit confused as to why having a sitting mat without a border can fall into the same category.
Wouldn’t it be considered less indulgent to not have the border? Am I missing something?
Well, without the one-hand-span border, the sitting cloth is at most two by one-and-a-half hands, which is too small to properly sit on. So perhaps they were making the cloths the full size without the border?
Ah, thanks Venerable, I didn’t think of it that way
Done! 