On one occasion the Blessed One was living in Vesālī, in the Great Wood. Then a certain Vajjian monk approached him and, on arrival, having bowed down to him, sat to one side. As he was sitting there, he said to the Blessed One, “Lord, this recitation of more than 150 training rules comes every fortnight. I cannot train in reference to them.”
“Monk, can you train in reference to the three trainings: the training in heightened virtue, the training in heightened mind, the training in heightened discernment?”
“Yes, lord, I can train in reference to the three trainings: the training in heightened virtue, the training in heightened mind, the training in heightened discernment.”
“Then train in reference to those three trainings: the training in heightened virtue, the training in heightened mind, the training in heightened discernment. As you train in heightened virtue, heightened mind, & heightened discernment, your passion, aversion, & delusion—when trained in heightened virtue, heightened mind, & heightened discernment—will be abandoned. You—with the abandoning of passion, the abandoning of aversion, the abandoning of delusion—will not do anything unskillful or engage in any evil.”
Later on, that monk trained in reference to heightened virtue, heightened mind, & heightened discernment. His passion, aversion, & delusion—when trained in heightened virtue, heightened mind, & heightened discernment were abandoned. He—with the abandoning of passion, the abandoning of aversion, the abandoning of delusion—did not do anything unskillful or engage in any evil.