律戒本疏 1.25

1.25

第四從非親比丘尼取衣　花色比丘尼以肉奉眾時著一衣。衣極精好。六群比丘見而貪求。尼即施之。自著弊衣。世尊怪問。因是結戒。以三緣故遮取尼衣。一以尼求衣難得故。二非親理取無節故。三恐因是後心起非法故。各隨所樂貿易則聽。若竭支以上錢帛得貿。三衣不貿者埿洹僧。竭支以上犯墮。以下突。轉債貿亦犯。多比丘取一尼一衣。多人犯多尼邊取隨尼為犯。出家尼者未受沙忌戒故也。凡五處不應往。所謂大童女。寬婦。婬女。含新出門女。酤酒家也。

Fourth: Taking robes from an unrelated bhikṣuṇī. The bhikṣuṇī Utpalavarṇā, when offering meat to the Saṃgha, was wearing a robe. The robe was exceedingly fine and beautiful. The ṣaḍvargika monks saw it and craved it, and the nun forthwith gave it to them, wearing tattered clothes herself. The World-Honoured One was surprised and questioned [her]. On account of this, he formulated the precept. Taking a nun's robe is prohibited due to three conditions: first, because for a nun, seeking robes is difficult; second, [because from] an unrelated one, taking is without moderation; third, out of fear that based on this, evil minds may later give rise to unlawful conduct. If each barters according to what they desire, then it is permitted. If it is of the value of a saṃkakṣikā or above in coin or silk, it may be traded. If the three robes are not traded, [namely the antarvāsa], then for a saṃkakṣikā and above, one commits a pāyattika; below it, a duṣkṛta. Transferring debts to trade also constitutes an offense. If many monks take one robe from one nun, the many persons commit [the offense]. If one takes from many nuns, the offenses correspond to the [number of] nuns. As for "nuns who have gone forth," it is because they have not yet received the śikṣamāṇā precepts. In general, there are five places one should not visit: namely, mature maidens, widows, courtesans, newly married women, and taverns.