At one time a number of Vajjian monks from Vesālī had sexual intercourse without first renouncing the training and revealing their weakness. They became anxious, thinking, “The Buddha has laid down a training rule. Could it be that we’ve committed an offense entailing expulsion?” They told the Buddha. “You’ve committed an offense entailing expulsion.”

At one time a monk had sexual intercourse while dressed like a householder, thinking he would avoid an offense. He became anxious, thinking, “The Buddha has laid down a training rule. Could it be that I’ve committed an offense entailing expulsion?” He told the Buddha. “You’ve committed an offense entailing expulsion.” At one time a monk had sexual intercourse while naked, thinking he would avoid an offense. He became anxious … “You’ve committed an offense entailing expulsion.” At one time a monk had sexual intercourse while dressed in a grass sarong … while dressed in a bark sarong … while dressed in a sarong made of bits of wood … while dressed in a sarong made of human hair … while dressed in a sarong made of horse-hair … while dressed in a sarong of owls’ wings … while dressed in a sarong of antelope hide, thinking he would avoid an offense. He became anxious … “You’ve committed an offense entailing expulsion.”