Devotee: "But those men of virtuous deeds whose sin has come to an end, freed from the delusion of dualities, worship Me, steadfastly avowed."
Prabhupāda: Yes. So to worship Kṛṣṇa steadfast means he is liberated from delusion. That is mukti. One who has got still some doubt—"Why shall I worship Kṛṣṇa?"—that means still in delusion, and still the reaction of his sinful life is not finished. A slight doubt means there is slight tinge still. And one who is dvandva-moha-nirmuktā, duality... Duality means "Whether I shall do it or not? Whether I shall stick up to this process of Kṛṣṇa conscious or not?" This is called duality. So one who is free from all these sinful reactions, he has no more duality. He has firm faith: "Yes! Kṛṣṇa worship is the final."
So Kṛṣṇa worship means he is liberated already. Just like the same example: If a man is sitting on the high-court bench, it is to be understood that he has passed all educational qualification, and he is a good lawyer. Therefore... There is no more necessity to ask, "Whether you have passed M.A. examination or law examination?" This is foolishness. Similarly, if one is, I mean to say, strictly in Kṛṣṇa consciousness, then it is to be understood that he is liberated. Liberation, the definition of liberation, is in the Śrīmad-Bhāgavatam, mukti..., svarūpeṇa vyavasthitiḥ. Hitvā... Muktir hitvānyathā rūpaṁ svarūpeṇa vyavasthitiḥ (SB 2.10.6). Mukti means hitvā anyathā rūpam. Now we are now represented in different kinds of formalities. You have got a different kinds of idea; I have got different kinds of idea; another man has different from others. There are difference; therefore we are clashing each other. This is the sign of bondage. And mukti means when we are liberated from these different kinds of ideas, and svarūpeṇa vyavasthitiḥ, when we are situated in our constitutional position, that is called mukti, liberation. And what is our constitutional position? "Oh, I am the part and parcel of the Supreme, Kṛṣṇa." Then what is my duty? Duty, part's duty, is to serve the whole. That's all. Just like your hand, the part of your body. What is the duty of hand? To serve the body. It is very easy thing. If you are part and parcel of the Supreme, then what is your duty? Your duty is to serve Him. You have no other duty.