“When there are five of you, you should do the invitation ceremony in the Sangha.” At one time on the invitation day, there were four monks staying in a certain monastery. “The Buddha has instructed that the invitation ceremony should be done in the Sangha when there are five monks. But there’s only four of us. So how should we do the invitation ceremony?” “When there are four of you, you should do the invitation ceremony with one another. And you should do it like this. A competent and capable monk should inform those monks: ‘Please, venerables, I ask you to listen. Today is the invitation ceremony.