四分律比丘戒本 1.p70

1.p70

If a monk, at the end of the three months summer retreat, after the fifteenth day of the eighth month, think proper to remove to a distant spot, and if there be some danger or apprehension of danger in connection with the spot he has chosen for a residence, the monk thus circumstanced may leave either one of his three garments in a house of the village in which he has been residing; and if occasion require, may go without it for six nights, but after that it is nissaggiya pācittiya.