‘Listen, please release this monk for a short time so that he can take part in the observance-day ceremony.’ If they’re able to do this, it’s good. If not, they should say to those relatives, ‘Listen, please step aside for a moment while this monk passes on his purity.’ If they’re able to do this, it’s good. If not, they should say to those relatives, ‘Listen, please take this monk outside the monastery zone for a short time while the Sangha does the observance-day ceremony.’ If they’re able to do this, it’s good. If not, you shouldn’t do the observance-day ceremony with an incomplete sangha. If you do, you commit an offense of wrong conduct.