四分律行事鈔資持記 2.481

2.481

制意六種，初意。通一切戒。故知比丘以法為伴；必無戒者，窮獨何依。二意者，女多繫屬，人所忌故。三中。不但等者，出他疑嫌之相。四中。根本淫業即大惡源，制此防彼故。第五。順本貪欲，不能攝心故。六中。初敘比丘志行，若下明非所應為。既乖超絕，即失自利；喪人崇敬，即失利他。僧田既失，佛法隨壞，三寶滅故。幸細尋諸意，以警策自心。

There are six intentions behind the prohibition. The first intention applies generally to all precepts. Thus we know that a bhikṣu takes the Dharma as his companion; if he must be without the precepts, on what could he rely in his destitute solitude? The second intention: women are mostly attached [to families], which people abhor. In the third: 'not only...', etc., reveals the marks of others' suspicion and disgust. In the fourth: the fundamental sexual karma is the great source of evil, and prohibiting this is to guard against that. The fifth: yielding to fundamental greed and desire, being unable to restrain the mind. In the sixth: first, it recounts the aspiration and practice of a bhikṣu; from 'if' downward, it clarifies what ought not to be done. Once one departs from transcendence, one loses self-benefit; losing people's veneration and respect, one loses benefiting others. Once the field of merit of the Saṃgha is lost, the Buddha-Dharma is ruined accordingly, because the Triratna is extinguished. May one examine these intentions closely to alert and spur one's own mind.