[186] Now at that time a certain bhikkhu had committed an offence (āpatti) on that Uposatha day. Then it occurred to that bhikkhu: "It has been laid down by the Blessed One that the Uposatha should not be performed by one who has an offence upon him; and I have committed an offence. How, then, should I proceed?" They reported this matter to the Blessed One.
"Bhikkhus, here a bhikkhu has committed an offence on the Uposatha day. Bhikkhus, that bhikkhu should approach one bhikkhu, arrange his upper robe (uttarāsaṅga) over one shoulder, sit down on his haunches, raise his joined palms, and say to him thus: 'Friend, I have committed an offence of such-and-such a name; I confess it.' He should be asked by him: 'Do you see it?' 'Yes, I see it.' 'You should exercise restraint in the future.'
"Bhikkhus, here a bhikkhu is in doubt about an offence on the Uposatha day. Bhikkhus, that bhikkhu should approach one bhikkhu, arrange his upper robe over one shoulder, sit down on his haunches, raise his joined palms, and say to him thus: 'Friend, I am in doubt about an offence of such-and-such a name; when I become free from doubt, then I will make amends for that offence.' Having said this, the Uposatha should be performed and the Pātimokkha listened to; but on that account no obstacle to the Uposatha should be made."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.