The right action, the pure action, performed in Krishna consciousness.
The Lord says: I will teach you the action, this knowledge will deliver you from all sin.
We must act only in Krishna consciousness, which is the essence of right and pure action. Only action performed in Krishna consciousness can put an end to material existence.
Anyone who is seriously determined to escape the clutches of matter must learn to distinguish between action, inaction and acts contrary to the teachings revealed in the holy scriptures.
First of all, in order to distinguish Krishna conscious action from that dictated by the three attributes and modes of influence of material nature: virtue, passion and ignorance, it is essential to know our position in relation to Krishna, and to fully realise that all beings are His eternal servants. Having done this, it remains to act accordingly, that is, in Krishna consciousness or God consciousness. Whoever acts in Krishna consciousness automatically escapes the imprisonment of karma, the law of action-reaction, or the law of cause and effect.
The saintly being, the devotee of God, dedicates all his acts and their fruits to Lord Krishna, and therefore he neither enjoys nor suffers from their effects. Although he continues to act, he is intelligent among men, for he does so only for Krishna, God, the Supreme Person. All his acts have no material consequences. Knowing that he, as an incarnate spiritual being, is eternal, he has no fear, for he knows he is the eternal servant of God and does not hesitate to act in Krishna consciousness. All his actions, while he is free from all material desires, are aimed at the exclusive pleasure of Krishna, and their only consequence is absolute happiness. Acting in full awareness of his eternal subordination, he is immune to all material consequences of his actions.
To know the acts of a God-conscious person, one must possess full knowledge oneself. The fact that a Krishna conscious man escapes the lure of material pleasures shows that the consequences of his acts have been consumed in the fire of perfect knowledge of his eternal condition as a servant of God, the Supreme Person. His knowledge is likened to a fire which, when fed, has the power to reduce to ashes all the material consequences of his acts. This is the true scholar.
God adds: Totally detached from the fruit of his actions, always satisfied and self-sufficient, he does not act materially, although he is continuously active.
Only by acting in Krishna consciousness, for the sole purpose of satisfying Lord Krishna, can we become free from the consequences of action. The pure devotee of God, the Supreme Person, has no desire for the fruits of his actions. He is not even really concerned with his bodily needs, he relies on Krishna for everything.