karma brahmodbhavam viddhi brahma aksharasamudhbhavam |
tasmaat sarvagatam brahma nityam yajne pratishthitam || 15 ||
karma : actions, brahmodbhavam : arise out of the Vedas, viddhi : know, brahma : Vedas, aksharasamudhbhavam : arise out of the imperishable, tasmaat : therefore, sarvagatam : all-pervading, brahma : eternal essence, nityam : always, yajne : yajna, pratishthitam : established,
Know that actions arise out of the Vedas, and that the Vedas arise out of the imperishable (eternal essence). Therefore, yajna is always established in that all-pervading eternal essence.
According to Karmayoga, actions are of two types, selfless and selfish. Selfish actions bind us to worldly objects, and selfless actions do not. Therefore, Shri Krishna urges us to move gradually from the level of inaction to selfish action first, and then from selfish action to selfless action or yajna. Only through acting in the spirit of yajna will we move forward on the path to realizing the eternal essence.