Everything is given by Vyāsadeva in writing, and we'll accept it, Nārāyaṇa, incarnation of Nārāyaṇa, mahāmuni-kṛte. He is also Vyāsa-muni, but He is also mahāmuni-kṛte. So there cannot be any mistake in the words of Vyāsadeva. This is the difficulty. If one does not come through the channel of disciplic succession, so they are in so many ways mistaken. Vyāsadeva is above all this. He is not an ordinary writer, material description or material name and faith. He cannot be mistaken. As Bhagavān, Kṛṣṇa cannot be mistaken. Similarly, Vyāsadeva, incarnation of Bhagavān, he also cannot be mistaken. Neither devotee of Kṛṣṇa can be mistaken. Devotee of Kṛṣṇa, he does not say anything as his own opinion. He never says. What Kṛṣṇa says, he says. He may be not perfect, but what Kṛṣṇa has said, that is perfect.
Therefore, a pure devotee, who does not say anything beyond which was spoken by Kṛṣṇa, therefore his statement is also without mistake. Common man within this material world, he commits mistake: "To err is human." Even big, big personalities, they commit mistake. But nārāyaṇa paraḥ. He is transcendental. Kṛṣṇa is transcendental. There cannot be any mistake; there cannot be any illusion. Those who are in this material world, they have got four defects: they commit mistake, they are illusioned, and their senses are imperfect, bhrama, pramāda, vipralipsā, and they're cheaters.