If you do, you commit an offense of wrong conduct. Everyone should squat on their heels during the invitation ceremony.” On one occasion, while squatting on his heels and waiting for everyone to finish, a senior monk who was weak from old age fainted and fell over. They told the Buddha. “You should squat on your heels until you have invited correction. Once you have invited, you may sit down.” 2. Breach of the invitation ceremony The monks thought, “How many invitation days are there?” “There are two invitation days: the fourteenth and the fifteenth day of the lunar half-month.”