[823] Origin at Sāvatthī. Now on that occasion the group-of-six bhikkhus sat in inhabited areas having covered themselves head and all. … "I shall not sit in inhabited areas with my head covered"—thus the training is to be undertaken.
One should not sit in an inhabited area with the head covered. Whatever bhikkhu, out of disrespect, sits in an inhabited area having covered himself head and all, incurs an offense of wrong-doing (dukkaṭa).
There is no offense: if it is unintentional; if he is unmindful; if he does not know; if he is ill; for one who has gone to a lodging; in emergencies; for one who is insane; for the first offender.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.