We are talking of Prahlāda Mahārāja's prayer. He was thinking himself unfit for offering prayers to the Lord. But still, because he was requested by the great demigods headed by Lord Brahmā and others, he thought that material qualification, namely high parentage, riches, beauty, bodily strength, yogic power, all of them are not qualification for becoming a devotee or qualified to approach the Supreme Personality of Godhead.
- manye dhanābhijana-rūpa-tapaḥ-śrutaujas-
- tejaḥ-prabhāva-bala-pauruṣa-buddhi-yogāḥ
- (SB 7.9.9)
These things I have already explained. Dhana means riches; abhijana . . . abhijata means aristocratic family; bala means bodily strength; buddhi, intelligence; pauruṣa, power in endeavor, industrious. These are material qualification. And the yoga, aṣṭa-siddhi-yoga, that is also material. By exercising the body to concentrate the mind, that is also material. Because mind is material, subtle form of matter. It is explained in the Bhagavad-gītā, bhūmir āpo 'nalo vāyuḥ khaṁ mano buddhir eva ca (BG 7.4). Mind, intelligence, ego, ahaṅkāra itīyaṁ me bhinnā prakṛtir aṣṭadhā. So they are subtle form of matter.
So yogic exercise means to control the mind, dhyānāvasthita-tad-gatena manasā (SB 12.13.1). In order to make the mind controlled and fully fixed up on the Supreme Personality of Godhead, that is required in yoga meditation. Dhyānāvasthita, one remains in meditation. What for? Dhyānāvasthita-tad-gata manasā, just in order to make the mind completely, completely absorbed in Kṛṣṇa. Dhyānāvasthita-tad-gatena manasā paśyanti. By concentrating the mind upon Kṛṣṇa, generally Lord Viṣṇu, dhyānāvasthita-tad-gatena manasā paśyanti yaṁ yoginaḥ (SB 12.13.1), they are also material endeavor. They are not spiritual. Because spiritual life begins when one understands fully that he is not this body.
That is the beginning of instruction in the Bhagavad-gītā. When Kṛṣṇa saw that Arjuna was talking on the platform of bodily concept of life, He was not talking seriously anything. Arjuna could understand that, that Kṛṣṇa was just talking as friend, not very seriously. Therefore, he submitted himself as a student: śiṣyas te 'haṁ śādhi māṁ prapannam (BG 2.7). So . . . and He chastised him, that "You have no spiritual knowledge, still you are talking just like a great scholar." Aśocyān anvaśocas tvaṁ prajñā-vādāṁś ca bhāṣase (BG 2.11). "You are talking just like a very learned man."