尼羯磨 1.16

1.16

結大界法（律言：當敷座，當打揵椎，盡共集一處，不聽受欲。是中舊住比丘尼應唱大界四方相，若東方有山稱山，有塹稱塹，若城、若疆畔、若園、若林、若池、若樹、若石、若垣牆、若神祀舍；如東方相，餘方亦爾。但結界處不得二界相接，應留中間，亦不得隔駛流水結，除常有橋船。唱相之法，應起禮僧，白言：）

The Method for Establishing a Mahāsīmā (The Vinaya states: "One should spread the seats, strike the gaṇḍī, and all assemble in one place together; receiving chanda is not permitted. Herein, resident bhikṣuṇīs of long standing should announce the boundary marks in the four directions of the mahāsīmā: if there is a mountain in the east, name the mountain; if a trench, name the trench; if a city wall, boundary marker, park, forest, pond, tree, stone, perimeter wall, or shrine; as with the marks of the east, so with the other directions. But where a sīmā is established, two sīmās must not touch; an intermediate space should be left; nor may it be established across swiftly flowing water, except where there is a permanent bridge or boat." The method for announcing the marks: one should rise, bow to the saṃgha, and state:)