四分律行事鈔資持記 3.1087

3.1087

獨渡河中，初緣又二，初定犯相。道行戒，即尼制邊方，有疑怖處，人間遊行，皆犯提罪。彼明行相，通界外內，可決今犯。次明開緣。有橋而渡，不涉水故。車船亦爾，如次所明。第二緣，初示犯相。入水方便，上岸至果。文據兩尼，以示輕重。律下，次教正儀。三四可知。

Regarding crossing a river alone, the first condition also has two parts: first, defining the marks of the offense. The 'traveling on the road' precept refers to the bhikṣuṇī prohibition against wandering among people in border regions where there are suspicious and fearful places, all of which incur a pāyattika. That text clarifies the marks of walking as extending both inside and outside the boundary, which can determine the present offense. Next, it clarifies exceptions: crossing where there is a bridge does not involve wading through water. Carts and boats are also like this, as clarified in sequence. Under the second condition, it first indicates the marks of the offense: entering the water is the preparatory stage, and stepping onto the bank is the culmination. The text relies on two nuns to illustrate the light and heavy. From 'The Vinaya' below, it next teaches the proper deportment. The third and fourth conditions can be understood.