Our Kṛṣṇa consciousness movement adopts this pāñcarātrika-vidhi, as advised by Śrīla Sanātana Gosvāmī, who says:
yathā kāñcanatāṁ yāti
kāṁsyaṁ rasa-vidhānataḥ
tathā dīkṣā-vidhānena
dvijatvaṁ jāyate nṛṇām
"As bell metal, when mixed with mercury, is transformed to gold, a person, even though not golden pure, can be transformed into a brāhmaṇa, or dvija, simply by the initiation process." (Hari-bhakti-vilāsa 2.12) Thus if one is initiated by a proper person, he can be accepted as twice-born immediately. In our Kṛṣṇa consciousness movement, we therefore offer the student his first initiation and allow him to chant the Hare Kṛṣṇa mahā-mantra. By chanting the Hare Kṛṣṇa mahā-mantra regularly and following the regulative principles, one becomes qualified to be initiated as a brāhmaṇa, because unless one is a qualified brāhmaṇa he cannot be allowed to worship Lord Viṣṇu. This is called yājñika janma. In our Kṛṣṇa consciousness society, unless one is twice initiated—first by chanting Hare Kṛṣṇa and second by the Gāyatrī mantra—he is not allowed to enter the kitchen or Deity room to execute duties. However, when one is elevated to the platform on which he can worship the Deity, his previous birth does not matter.
(Srimad Bhagavatam-----4:31:10-----purport).

Although Śrīla Haridāsa Ṭhākura was born in a Muslim family, he was accepted as a properly initiated brāhmaṇa. As such, he had every right to enter the temple of Jagannātha Purī, but because there were some rules and regulations stipulating that only brāhmaṇas, kṣatriyas, vaiśyas and śūdras (members of the varṇāśrama-dharma system) could enter, Haridāsa Ṭhākura, out of his great humility, did not want to violate these existing rules. He therefore said that he did not have the strength to enter into the temple, and he pointed out that if Lord Śrī Caitanya Mahāprabhu lived within the temple, there would be no way for Haridāsa Ṭhākura to see Him. Later, when Haridāsa Ṭhākura went to Jagannātha Purī, he lived outside the temple, at a place called Siddhabakula. A monastery has now been erected there, known as Siddhabakula Maṭha. People who visit Jagannātha Purī often go to see Siddhabakula and the tomb of Haridāsa Ṭhākura, on the beach by the sea.
(Sri Caitanya Caritamrta-----2:3:194-----purport).

Śrī Caitanya Mahāprabhu then recited the following verse: "'My dear Lord, one who always keeps Your holy name on his tongue becomes greater than an initiated brāhmaṇa. Although he may be born in a family of dog-eaters and therefore by material calculation may be the lowest among men, he is still glorious. This is the wonderful effect of chanting the holy name of the Lord. It is therefore concluded that one who chants the holy name of the Lord should be understood to have performed all kinds of austerities and great sacrifices mentioned in the Vedas. He has already taken his bath in all the holy places of pilgrimage. He has studied all the Vedas, and he is actually an Āryan.'"
(Sri Caitanya Caritamrta-----2:11:192-----translation).

The regulative principles of dīkṣā are explained in the Hari-bhakti-vilāsa (2.3–4) and the Bhakti-sandarbha (283). As stated:
dvijānām anupetānāṁ svakarmādhyayanādiṣu
yathādhikāro nāstīha syāc copanayanād anu
tathātrādīkṣitānāṁ tu mantra-devārcanādiṣu
nādhikāro ‘sty ataḥ kuryād ātmānaṁ śiva-saṁstutam
"Even though born in a brāhmaṇa family, one cannot engage in Vedic rituals without being initiated and having a sacred thread. Although born in a brāhmaṇa family, one becomes a brāhmaṇa only after initiation and the sacred thread ceremony. Unless one is initiated as a brāhmaṇa, one cannot worship the holy name properly."
According to the Vaiṣṇava regulative principles, one must be initiated as a brāhmaṇa.
(Sri Caitanya Caritamrta-----2:15:108-----purport).

According to external vision, Haridāsa Ṭhākura belonged to a Muslim family. Nevertheless, because he engaged himself in performing the yajña of chanting the Hare Kṛṣṇa mahā-mantra, he became a regularly initiated brāhmaṇa. As stated in Śrīmad-Bhāgavatam (3.33.6):
yan-nāmadheya-śravaṇānukīrtanād
yat-prahvaṇād yat-smaraṇād api kvacit
śvādo ‘pi sadyaḥ savanāya kalpate
kutaḥ punas te bhagavan nu darśanāt
Even if a devotee comes from a family of dog-eaters, if he surrenders to the Personality of Godhead he immediately becomes a qualified brāhmaṇa and is immediately fit to perform yajña, whereas a person born in a family of brāhmaṇas has to wait until completing the reformatory processes before he may be called saṁskṛta, purified.
(Sri Caitanya Caritamrta-----3:3:124-----purport).

When the sound vibration of Kṛṣṇa's flute is expressed through the mouth of Brahmā, it becomes gāyatrī. Thus by being influenced by the sound vibration of Kṛṣṇa's flute, Brahmā, the supreme creature and first living entity of this material world, was initiated as a brāhmaṇa. That Brahmā was initiated as a brāhmaṇa by the flute of Kṛṣṇa is confirmed by Śrīla Jīva Gosvāmī. When Brahmā was enlightened by the gāyatrī mantra through Kṛṣṇa's flute, he attained all Vedic knowledge. Acknowledging the benediction offered to him by Kṛṣṇa, he became the original spiritual master of all living entities.
(Teachings of Lord Caitanya).

Uddhava was attracted by the attitude of the gopīs because they were completely attached to Kṛṣṇa, and he was inspired by the gopīs' anxiety for Kṛṣṇa. He offered them his respectful obeisances and composed songs in praise of their transcendental qualities as follows: “Among all the living entities who have accepted the human form of life, the gopīs are superexcellently successful in their mission. Their thought is eternally absorbed in the lotus feet of Kṛṣṇa. Great sages and we ourselves also try to be absorbed in meditation on the lotus feet of Kṛṣṇa, but the gopīs, having lovingly accepted the Lord, are automatically accustomed to this and do not depend on any yogic practice. The conclusion is that one who has attained the gopīs' condition of life does not have to take birth as Lord Brahmā or be born in a brāhmaṇa family or be initiated as a brāhmaṇa.”
(Krsna Book).