Action in Knowledge of Krṣṇa
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not bound to His activities in the material world, and one who knows this also becomes free from reactional activities.
evaṁ jñātvā kṛtaṁ karma pūrvair api mumukṣubhiḥ kuru karmaiva tasmāt tvaṁ pūrvaiḥ pūrvataraṁ kṛtaṁ
“All the liberated souls in ancient times acted with this understanding and so attained liberation. Therefore, as the ancients, you should perform your duty in this divine consciousness.” (Bg. 4.15)
The process of Krṣṇa consciousness requires that we follow in the footsteps of the great  ācāryas  who have attained success in spiritual life. If one acts by following the examples set by great  ācāryas , sages, devotees and enlightened kings who have performed  karma-yoga  in their lives, he shall also become free.
On the battlefield of Kurukṣetra, Arjuna was very much afraid of being entangled in his activities by engaging in warfare. Krṣṇa therefore assured him that if he fought for His sake there would be no possibility of entanglement.
kiṁ karma kim akarmeti kavayo 'py atra mohitāḥ tat te karma pravakṣyāmi yaj jñātvā mokṣyase 'śubhāt
“Even the intelligent are bewildered in determining what is action and what is inaction. Now I shall explain to you what action is, knowing which you shall be liberated from all sins.” (Bg. 4.16)