Prabhupāda: "Sir, I have come to you, under the direction of Lord Śiva. I worshiped Lord Śiva very successfully, and I prayed from him some sources of my happiness. So he has directed me to see you, that you have got that thing. So please give me that."
So Sanātana Gosvāmī said: "Well, what can I give you? Oh, all right. Can you find out some stone in that garbage?" There was heaps of garbage, and the man searched out and found out a stone. "Sir, do you mean to say this stone?" "Yes." "So what is this?" "This is touchstone. You take it and touch to iron, it will become gold." "Oh, you are very good. You're so . . . now I shall become the richest man in the world. I shall take heaps of iron and touch with this stone, and it becomes gold."
So he, with great joy, he went out and he tried that actually, touching the stone, iron is becoming gold. But he thought that "Lord Śiva directed that Sanātana Gosvāmī has the greatest benediction. I do not think this stone is greatest benediction, because it was placed with garbage." So he came back and appealed to Sanātana Gosvāmī that "Lord Śiva told me you have got something most valuable. I don't think this stone is most valuable. Otherwise, why would you keep it with the garbage? You must have something more valuable. So you must give me that, because Lord Śiva directed me to receive from you."
Then Sanātana Gosvāmī told him, "Would you like to take that?" "Yes, sir. I have come for that purpose." So he asked him, "First of all, throw away the stone in the Yamunā River." So he threw away the stone. "Sit down and chant Hare Kṛṣṇa."
Prabhupāda: "Forget everything. Sit down with me and chant Hare Kṛṣṇa."
Gargamuni: He did it?
Prabhupāda: Yes. Because he associated with sādhu, Lord Śiva, Sanātana Gosvāmī. So everything was purified, changed. By association, good association, everything is possible. Therefore you have to make this association of Kṛṣṇa consciousness so perfect that anyone who comes in contact with that association, he becomes purified automatically.
That association is so important. Anyone who will come in contact with the association, he'll be purified. Just like by association one becomes contaminated, similarly, by counter-association, one becomes free from contamination.