Chapter 4 – JnanaYoga
yasya sarve samārambhāḥ
tam āhuḥ paṇḍitaṁ budhāḥ
Text Source – “http://prabhupadabooks.com/bg”
One whose all sorts of activities are devoid of desire(for the karma phala), one whose actions are burnt by the fire of knowledge, him the learned men declare as a pandita(jnani).
God is preaching how Karma should be done. Firstly, all endeavors should be undertaken without the intention of gratifying his senses – in other words one’s actions should not be driven by any desire. Instead they should be done as a service to the Lord.
When does one do such an action – when he is in knowledge.
Knowledge of what? – knowledge of the Self. Knowledge of The Lord(neither he is bound by karma nor does he aspire for karma-phala). That everything is one. Knowledge that desire oriented actions will get you even more entangled in karma(by producing more karma).
When action is done in knowledge it burns all the karma, as knowledge makes one act in such a way that he doesn’t produce additional karma.
In short, action should be done with knowledge.