The mad-bhaktiṁ labhate parām, this is, means, that spiritual activities. Spiritual activity . . . Ānukūlyena kṛṣṇānuśīlanam (CC Madhya 19.167, NOD 1.1.11). Anuśīlanam. Anuśīlanam is activity, cultivating. Anything you cultivate, that is not inactivity; there is activity.
Rūpa Gosvāmī, he resigned from his ministership and came to Vṛndāvana under the order of Śrī Caitanya Mahāprabhu not to become an inactive person. No. Nānā-śāstra-vicaraṇaika-nipuṇau (Ṣaḍ-gosvāmy-aṣṭaka 2). After giving up his ministership he did not come here to eat and sleep. No. Then he began to study various Vedic literatures. Nānā-śāstra-vicaraṇaika-nipuṇau. Just like any perfect person writing some book, he gives evidences from the Vedas, vicaraṇaika-nipuṇau. They became very expert in considering the Vedic version, nānā-śāstra. In the Vedas there are many departments of knowledge—Sāma Veda, Yajur Veda, Ṛg Veda, Atharva Veda, Āyur Veda, Dhanur Veda, everything, Jyotir Veda. Therefore Veda is considered as the kalpa-taru, desire tree. Whatever knowledge you want, it is present. Veda means knowledge, and Vedānta means the ultimate knowledge. The ultimate knowledge is to know Kṛṣṇa. Vedaiś ca sarvair aham eva vedyaḥ (BG 15.15). But in the meantime, meanwhile, there are so many department of knowledge, and you can understand from the Vedas. Everything is there, direction. So ultimately you have to understand Kṛṣṇa.
So here Nṛsiṁha-deva addressing, prahlādo bhadra, perfect gentleman. In India it is called bhadraloka. Bhadra means a perfect gentleman, bhadraloka. That is the general etiquette, to address somebody as bhadraloka. Especially in Bengal it is very common word, bhadra. And the other parts also. So bhadra means perfect gentleman. Just see, Prahlāda was perfect gentleman.
A devotee is perfect gentleman. Why? Because he has developed all good qualities. That is bhadra. A devotee cannot be abhadra. He must be bhadra. That is perfection. Therefore a devotee is never rude to anyone. When Rūpa Gosvāmī was here, some very learned scholar came to talk with him śāstrārtha, talking on śāstra. So when he approached Rūpa Gosvāmī, he asked that "I want to talk with you about śāstra." And he said, "I am not a very learned man. How can I talk with you? You are so learned." So he said, "If you think that you are not learned, then you give me in writing that 'I am not learned.' " So he immediately gave him: "All right, take it. I am not learned." (laughs) So when he was going away with that chit, that "He is the most learned scholar, and Rūpa Gosvāmī's defeated," then Jīva Gosvāmī was standing outside. He said, "What is that paper?" "No, your uncle has written frankly that he is not learned. I am learned." "All right, talk with me." Then he defeated him. (laughter)