The Zend Avesta, Part III (SBE31), L.H. Mills, tr. , at sacred-texts.com
And we strive after the good thoughts, words, and deeds inculcated in the Yasna Haptanghâiti. A blessing is the Right (called) the Best, (there is) weal; (there is) weal for this (man) when toward Righteousness Best (there is) right.
359:3 An addition to chapter XVI.