So anyway, we have to, if we want jñāna—because the jñānamaya-yajña is recommended the highest yajña—so if we actually want jñāna, then we have to first of all find out a person who is tattva-darśī. Just like if you have to purchase gold, you must know where gold is available. If you go for purchasing gold to a grocer shop then it is hopeless. You see? It is not possible. Then you will be cheated. So at least you have to find out the person who has... That can be found. Just like by culture. That is called sacrifice, jñāna.
If you are actually in search of knowledge, Kṛṣṇa will help you, because He is helping you in every way. Īśvara. Sarvasya cāhaṁ hṛdi sanniviṣṭaḥ (BG 15.15). This we have discussed this morning. He is always with you; so He understands what kind of knowledge you are in search after. So we must be sincere, that we want to know that Absolute Truth. Then you will find out; Kṛṣṇa will help you. If you want a Brahmavādī, He will help you. If you want a Paramātmavādī, then He will help you. And if you want a devotee, that also help. So tad viddhi. You have to first of all search out a person. So Kṛṣṇa recommends that if you want knowledge then first of all... That is the process, the whole Vedic process.
In the Kaṭhopaniṣad also it is said that tad-vijñānārthaṁ gurum eva abhigacchet: "If you want to understand the transcendental science, then you have to approach to a spiritual master." And who is spiritual master? Oh, nowadays everyone wants to be spiritual master. Oh, that is also mentioned, who is spiritual master. Samit-pāṇiḥ śrotriyaṁ brahma-niṣṭham: (MU 1.2.12) "You have to approach a spiritual master who is śrotriyam and brahma-niṣṭham." Śrotriyam means who has come down from the disciplic succession, or from the Supreme. Just like we have understood in the Fourth Chapter, in the beginning of the Fourth Chapter, evaṁ paramparā-prāptam imaṁ rājarṣayo viduḥ (BG 4.2). There is a paramparā; there is disciplic succession. So one who is coming into that disciplic succession and by coming from that disciplic succession, he is firmly convinced in the Absolute, he is firmly conversant in the Absolute Truth, he is guru. Two qualifications. Tad viddhi praṇipātena paripraśnena (BG 4.34).