The speech which causes no sorrow, which is true, agreeable, and beneficial, and the study of the Vedas, (this) is called the penance vocal. Calmness of mind, mildness, taciturnity, selfrestraint, and purity of heart, this is called the penance mental. This threefold penance, practised with perfect faith, by men who do not wish for the fruit, and who are possessed of devotion, is called good.