At one time the Buddha was staying at Sāvatthī in the Jeta Grove, Anāthapiṇḍika’s Monastery. At that time the monks from the group of six gave teachings to people wearing sandals. … One should not give a teaching to anyone wearing sandals who is not sick. If a monk, out of disrespect, gives a teaching to someone who is not sick and who is standing on sandals, whose sandals are fastened, or whose sandals are loose, he commits an offense of wrong conduct. if he is the first offender. The second training rule is finished.