僧羯磨 1.50

1.50

結不失衣界法（時有厭離比丘見阿蘭若有一好窟，自念言：「我若得離衣宿者，可即於此窟住。」佛言：「自今已去，當結不失衣界白二羯磨。」當如是作。）

The procedure for demarcating a sīmā for non-separation from robes. (At that time, an aloof bhikṣu saw a fine cave in an araṇya and thought to himself: "If I could spend the night separated from my robes, I could reside right in this cave." The Buddha said: "From this day forth, you should demarcate a sīmā for non-separation from robes by a jñaptidvitīya-karman." It should be performed thus.)