183. Not to commit any sin, to do good, and to purify one’s mind, that is the teaching of (all) the Awakened.
184. The Awakened call patience the highest penance, long-suffering the highest Nirvâna; for he is not an anchorite (pravragita) who strikes others, he is not an ascetic (sramana) who insults others.
185. Not to blame, not to strike, to live restrained under the law, to be moderate in eating, to sleep and sit alone, and to dwell on the highest thoughts,–this is the teaching of the Awakened.
DHAMMAPADA, Chapter 14. THE BUDDHA (THE AWAKENED)