The Vedanta Sutras of Badarayana, Commentary by Sankara (SBE38), tr. by George Thibaut  at sacred-texts.com
5. On account of the taking hold together.
'Then both his knowledge and his work take hold of him' (Bri. Up. IV, 4, 2); as this passage shows that knowledge and work begin together to manifest their fruits, it follows that knowledge is not independent.