If you chant Hare Kṛṣṇa, Hare Kṛṣṇa, that means your mind is fixed up in Kṛṣṇa. That is the perfection of yoga. So to become a brāhmaṇa, this is the first qualification: to keep the mind fixed up, not being agitated, śama. And when your mind is fixed up, then your senses will be controlled. If you fix up your mind that "I shall simply chant Hare Kṛṣṇa and take prasādam, no more business," then the senses will be controlled automatically. Tā'ra madhye jihwā ati, lobhamoy sudurmati (Gitavali).
So these are the different stages how to become a brāhmaṇa. Śamaḥ, damaḥ, then satyam, truthful. Truthful means in one sense ordinary truthful. But real truthful means to know the Absolute Truth. Absolute Truth. So that Absolute Truth, who is Absolute Truth? Kṛṣṇa. We are searching after truth, what is the truth, what is the relative truth. But when you come to Kṛṣṇa, that is Absolute Truth. Sarva-kāraṇa-kāraṇam (Bs. 5.1). This is truth. Then what is the cause of this truth? This is the. . . This is the. . . Neti, neti. So when you come to Kṛṣṇa, so above Him there is no more truth. Kṛṣṇa has no cause, but He is the cause of everything, sarva-kāraṇa-kāraṇam. Īśvaraḥ paramaḥ kṛṣṇaḥ sac-cid-ānanda-vigrahaḥ, anādiḥ (Bs. 5.1). He has no. . . People ask generally that "Everything has cause. What is the cause of Kṛṣṇa?" The answer is anādi: "He has no cause." That is God. Anādir ādiḥ: "He is the cause of everyone." Anādir ādir govindaḥ sarva-kāraṇa-kāraṇam (Bs. 5.1).
So if our mind is fixed up in Kṛṣṇa, then naturally the senses will be controlled. If we fix up our mind that we shall not do anything, dṛḍha-vratāḥ. . . Bhajante māṁ dṛḍha-vratāḥ (BG 7.28). This is determination, that "I shall have nothing to do without Kṛṣṇa." Then you are first-class yogī—dvija, brāhmaṇa, everything. Everything. So this is. . . these are the qualification of not dvija. . . Dvija is primary qualification of becoming a brāhmaṇa. Saṁskārād bhaved dvijaḥ. By saṁskāra, by the reformatory process, one is initiated—that is called dvija, dvitīya-janma. The spiritual master is the father, and the Vedic knowledge is the mother. This is called dvija, dvitīya-janma, second birth. So after being dvija, when the spiritual master sees that he is acquired sadācāra. . . Sadācāra means these four things: no illicit sex, no intoxication, no meat-eating, no gambling; taking bath thrice, rising early in the. . . These are called sadācāra. These are brahminical qualification.