“If a monk isn’t sick and he’s told by the most senior monk to go, he should go. If he doesn’t, he commits an offense of wrong conduct.” 17. The instruction to learn the number of the lunar half-month, etc. When he had stayed at Codanāvatthu for as long as he liked, the Buddha returned to Rājagaha. Then, while the monks were walking for almsfood, people asked them which half-month it was. that they did not know. People complained and criticized them, “These Sakyan monastics don’t even know the number of the lunar half-month. So how could they possibly know anything truly useful?” They told the Buddha. “You should learn the counting of the lunar half-months.”