[866] Origin at Sāvatthī (Sāvatthīnidānaṃ). Now at that time the group-of-six bhikkhus (chabbaggiyā) taught the Dhamma to a person sitting clasping the knees … "I shall not teach the Dhamma to a person who is not ill sitting clasping the knees" — thus the training is to be observed.
The Dhamma is not to be taught to a person who is not ill sitting clasping the knees. Whatever bhikkhu, out of disrespect, teaches the Dhamma to a person who is not ill sitting clasping the knees with the hands or clasping the knees with a cloth, commits an offense of wrong-doing (dukkaṭa).
There is no offense: if it is unintentional; if he is unmindful; if he does not know; if the person is ill; in emergencies; if he is mad; if he is the first offender.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.