Pradyumna: "The Lord particularly instructed Rūpa Gosvāmī on the science of Kṛṣṇa conscious..."
Prabhupāda: So here, here the point is that Sanātana Gosvāmī, Dabira Khāsa, he was so mad after meeting Caitanya Mahāprabhu that he, whatever money he had with the banker, village banker, and even it was sinful to bribe, he didn't care for it. He wanted... He re..., resigned his service as minister, Therefore he was imprisoned. Now to get out of the imprison, prison house, he bribed. He was so much ecstatic. There is a verse—I just now forget—that this laulyam. This is called laulyam. Laulyam means just like we become very much greedy in achieving some success or receiving something sometimes. We become mad. That is required. Laulyam eka mūlyam. To achieve Kṛṣṇa consciousness perfectly, this ecstatic eagerness or greediness, to serve Kṛṣṇa, that is the only price to achieve success in devotional service. That is the only price. Not money, not anything. Not prestige, not good parentage, not beauty—nothing. Simply this ecstatic, intense desire, "How I shall get Kṛṣṇa?" Then you'll get Kṛṣṇa. He'll take you. That is the example of the gopīs, intense desire. Tatra laulyam eka mūlyam. Now, janma-koṭi, na labhyate janma-koṭibhiḥ sukṛtinaḥ. This ecstatic desire, that "I, this life, I shall get recognition by Kṛṣṇa, that I have sacrificed everything for Kṛṣṇa," this is required.