四分律刪繁補闕行事鈔 2.138

2.138

These fifteen kinds of natural boundaries are sized as above. If evaluated according to the Dharmaguptaka, a peripheral extension is added. The text states: As for the saṃghārāma boundary, alongside the saṃghārāma, within the reach of a brick or stone thrown by an average person, that is called the boundary; and so on up to the storehouse boundary being the same. None of the other schools have a peripheral extension. In the Samantapāsādikā, there is none. That text does have a passage about throwing a stone, but it is for a different purpose. Its text states: A stone thrown by an average person means a person neither robust nor frail throws with all his strength to where it lands, not taking into account where it rolls. Various masters evaluate it as thirteen paces. Using this measure, it applies generally across the fifteen natural boundaries, but does not apply to formal boundaries (dharma-sīmā). One must enter the boundary in order to meet the robes. The Mahāsāṃghika states: If a bhikṣu goes to another place on some business and stays the night, and there are bhikṣus and bhikṣuṇīs there who have extra robes, he should borrow and sustain them. If there are none, and laypeople have blankets, he should borrow them, make them pure, attach ties, and then sustain them. If there are still no robes, in the latter part of the night he should quickly return to the monastery, not climbing over the city walls to go out. If he arrives at the monastery and the gates are not yet open, he should go under the gatehouse (because the roof beams of the gatehouse connect to the interior of the boundary; that Vinaya has no peripheral extension and takes this as the natural boundary, which should be understood as different from the Dharmaguptaka). If there is no such place, he should put his hand into a gate aperture or into a water conduit; first stirring it with an object so as not to touch venomous insects. If there is no such aperture, he should scale the wall and enter, not letting people suspect him. If he cannot enter, he should relinquish the robes. Better to be without robes and commit a minor transgression, exchanging the heavy for the light. Evaluated according to this statement, if inside the boundary there are the three obstructions mentioned above and one cannot be protected from the outside, one will certainly forfeit the sustained robes. Therefore the text says: If one stays overnight elsewhere, before dawn appears, if one reaches the reach of a thrown stone (meaning there are no three obstructions inside the boundary), or if one grasps the robes with one's hand (meaning there is an obstruction of defiled emotion inside the boundary), or if one relinquishes the robes (meaning there are physical obstructions inside the boundary, or external affairs); if one does not perform these three things, when dawn appears, according to the robes separated from, one commits a forfeiture.