Madhvaon Brahma Sūtra 3.4.5
Dvaita Vedānta
Sūtra
समन्वारम्भणात्
samanvārambhaṇāt
Sūtra translation
Also from Scripture which states that Svarga, etc., are chiefly the products of action. (Karma or action is the chief cause of the celestial, human or any other body, from the Sruti explicitly declaring it as the chief agency).
And this is seen from the Mathara Sruti, “ It is only action that produces the body of the gods, of men ; and there is no other cause thereof; and action itself ap- portions to each according to his lot, the good or evil ex- periences (to be undergone by the soul). The word ‘chiefly * 'Sam ’ shows that action is the important means and not (the secondary),