四分律比丘含注戒本 2.269

2.269

若村裏一界行，及尼等四眾，一切吉羅。不犯者，先不知，不共期，須往彼得安，若力勢諸難者，開。

(If travelling within the single boundary of a village, and with respect to the four assemblies of bhikṣuṇīs and the rest, in all cases it is a duṣkṛta. As for non-offences: not knowing beforehand; not making an agreement together; having to go there to find safety; or if prevented by force or various perils, it is permitted.)