四分律比丘戒本 1.p39

1.p39

If a monk consort with a woman in an open place, unfit for the commission of crime, but talk loosely with her, for example with a well-principled laywoman about the two laws, sanghadisesa, and pācittiya, and say respecting each of these of his own accord: “I have broken these laws and am liable to the punishment attached to such transgression” this monk shall be punished according to what the faithful laywoman reports. This also is a case in point.