俱舍論頌疏論本 16.79

16.79

釋曰：總有四種行不應行：一、於非境，謂行他妻、或父、或母、或父母親，乃至或王所守護境。二、於非道，謂行自妻口及餘道。三、於非處，謂於寺中制多逈處。四、於非時，謂懷胎時、飲兒乳時、受齋戒時，設自妻妾，亦犯邪行。於苾芻尼行非梵行，一解，從國王邊得罪，不忍許故。第二解，於自妻妾，受齋戒時尚不應犯，況出家者，舉重況輕，但有侵陵，成邪行罪。若犯童女，於所許處得罪。未許他者，於能護人，此及所餘皆於王得。

The explanation says: In total there are four kinds of engaging in what should not be engaged in: 1. With an improper person, meaning engaging with another's wife, or father, or mother, or relatives of father or mother, up to an object of desire protected by a king. 2. In an improper orifice, meaning engaging with one's own wife in the mouth or other orifices. 3. In an improper place, meaning in a monastery, near a caitya, or in an open area. 4. At an improper time, meaning during pregnancy, while nursing a child, or while observing the fasting precepts; even if with one's own wife or concubine, it still constitutes sexual misconduct. Regarding committing unchaste conduct with a nun: according to one explanation, one incurs the transgression on the side of the king, because he does not tolerate or allow it; according to a second explanation, even with one's own wife or concubine one should not violate them while observing the fasting precepts, so how much less one who has gone forth? By arguing from the grave to the light, any assault constitutes the transgression of sexual misconduct. If one violates an unmarried maiden, one incurs the transgression against the party to whom she was betrothed. If she was not yet betrothed to another, it is against the person who protects her; this and all remaining cases are incurred against the king.