Śrīdhara Svāmī especially remarks in this connection, anena pūjyatvaṁ lakṣyate. Some caste brāhmaṇasremark that by chanting Hare Kṛṣṇa, purification begins. Of course, that depends on the individual process of chanting, but this remark of Śrīdhara Svāmī's is completely applicable if one chants the holy name of the Lord without offense, for he immediately becomes more than a brāhmaṇa. As Śrīdhara Svāmī says, pūjyatvam: he immediately becomes as respectable as a most learned brāhmaṇa and can be allowed to perform Vedic sacrifices. If simply by chanting the holy name of the Lord one becomes sanctified instantly, then what can be said of those persons who see the Supreme Lord face to face and who understand the descent of the Lord, as Devahūti understands Kapiladeva.
(Srimad Bhagavatam-----3:33:6-----purport).

There is an injunction that those who are not brāhmaṇas cannot pronounce the praṇava mantra. But Dhruva Mahārāja was born a kṣatriya. He at once admitted before Nārada Muni that as a kṣatriya he was unable to accept Nārada's instruction of renunciation and mental equilibrium, which are the concern of a brāhmaṇa. Still, although not a brāhmaṇa but a kṣatriya, Dhruva was allowed, on the authority of Nārada, to pronounce the praṇava oṁkāra. This is very significant. Especially in India, the caste brāhmaṇas object greatly when persons from other castes, who are not born in brāhmaṇa families, recite this praṇava mantra. But here is tacit proof that if a person accepts the Vaiṣṇava mantra or Vaiṣṇava way of worshiping the Deity, he is allowed to chant the praṇava mantra. In Bhagavad-gītā the Lord personally accepts that anyone, even one of a low species, can be elevated to the highest position and go back home, back to Godhead, simply if he worships properly.
(Srimad Bhagavatam-----4:8:54-----purport).

The cult of Lord Caitanya Mahāprabhu is bhāgavata-dharma, and He especially recommends kṛṣṇa-kathā, or the cult of Bhagavad-gītā and Śrīmad-Bhāgavatam. He recommends that every Indian, considering this task to be para-upakāra, or welfare activity, take the Lord's message to other residents of the world. "Other residents of the world" does not refer only to those who are exactly like the Indian brāhmaṇas and kṣatriyas, or like the caste brāhmaṇas, who claim to be brāhmaṇas because they were born in the families of brāhmaṇas. The principle that only Indians and Hindus should be brought into the Vaiṣṇava cult is a mistaken idea.
(Srimad Bhagavatam-----4:8:54-----purport).

The difficulty, according to the Varāha Purāṇa, is that demons, taking advantage of Kali-yuga, have taken birth in brāhmaṇa families. Rākṣasāḥ kalim āśritya jāyante brahma-yoniṣu (Varāha Purāṇa). In other words, in this age there are many so-called caste brāhmaṇas and caste Gosvāmīs who, taking advantage of the śāstra and of the innocence of people in general, claim to be brāhmaṇas and Vaiṣṇavas by hereditary right. One will not derive any benefit by rendering service to such false brāhmaṇa-kulas.
(Srimad Bhagavatam-----4:21:40-----purport).

Sometimes caste brāhmaṇas argue that unless one changes his body he cannot be accepted as a brāhmaṇa, for since the present body is obtained as a result of past actions, one who has in the past acted as a brāhmaṇa takes birth in a brāhmaṇa family. Therefore, they contend, without such a brahminical body, one cannot be accepted as a brāhmaṇa. Herein it is said, however, that even vidūra-vigata, a caṇḍāla—a fifth-class untouchable—is freed if he utters the holy name even once. Being freed means that he immediately changes his body.
(Srimad Bhagavatam-----5:1:35-----purport).

The other palanquin carriers were śūdras, whereas Jaḍa Bharata was not only a high-caste brāhmaṇa but also a great devotee. Śūdras do not sympathize with other living beings, but a Vaiṣṇava cannot act like a śūdra. Whenever a śūdra and a brāhmaṇa Vaiṣṇava are combined, there will certainly be imbalance in the execution of duties.
(Srimad Bhagavatam-----5:10:4-----purport).

Through the Kṛṣṇa consciousness movement, we are trying to train young people to become devotees and return home, back to Godhead, by following rigid regulative principles, but our service is appreciated neither in India nor abroad in the Western countries where we are endeavoring to spread this Kṛṣṇa consciousness movement. In India the caste brāhmaṇas have become enemies of the Kṛṣṇa consciousness movement because we elevate foreigners, who are supposed to be mlecchas and yavanas, to the position of brāhmaṇas. We train them in austerities and penances and recognize them as brāhmaṇas by awarding them sacred threads. Thus the caste brāhmaṇas of India are very displeased by our activities in the Western world.
(Srimad Bhagavatam-----6:5:39-----purport).

There is a persistent misunderstanding between caste brāhmaṇas and advanced Vaiṣṇavas, or gosvāmīs, because caste brāhmaṇas, or smārtas, are of the opinion that one cannot become a brāhmaṇa unless he changes his body. As we have discussed several times, it is to be understood that by the supremely powerful potency of the Lord, as described by Kṛṣṇadāsa Kavirāja Gosvāmī, everything is possible.
(Sri Caitanya Caritamrta-----1:17:1-----purport).

A brāhmaṇa is also expected to offer obeisances to a sannyāsī. Unfortunately, however, caste brāhmaṇas do not offer obeisances to a Vaiṣṇava sannyāsī. They are so proud that they do not offer obeisances even to Indian sannyāsīs, what to speak of European and American sannyāsīs. Śrī Caitanya Mahāprabhu, however, expected that even thecaste brāhmaṇas would offer respectful obeisances to a sannyāsī because five hundred years ago the social custom was to offer obeisances immediately to any sannyāsī, known or unknown.
(Sri Caitanya Caritamrta-----1:17:265-----purport).

According to the Vedic injunctions, only a brāhmaṇa may be offered sannyāsa. The Śaṅkara-sampradāya (ekadaṇḍa-sannyāsa-sampradāya) awards the sannyāsa order only to caste brāhmaṇas, or born brāhmaṇas, but in the Vaiṣṇava system even one not born in a brāhmaṇa family may be made a brāhmaṇa according to the direction of the Hari-bhakti-vilāsa (tathā dīkṣā-vidhānena dvijatvaṁ jāyate nṛṇām).
(Sri Caitanya Caritamrta-----1:17:266-----purport).

It is Śrīla Bhaktisiddhānta Sarasvatī Gosvāmī’s opinion, however, that to follow the Hari-bhakti-vilāsa strictly is to actually follow the Vaiṣṇava rituals in perfect order. He claims that the smārta-samāja, which is strictly followed by caste brāhmaṇas, has influenced portions that Gopāla Bhaṭṭa Gosvāmī collected from the original Hari-bhakti-vilāsa. It is therefore very difficult to find out Vaiṣṇava directions from the book of Gopāla Bhaṭṭa Gosvāmī.
(Sri Caitanya Caritamrta-----2:1:35-----purport).

According to the varṇāśrama system, the brāhmaṇas are always honored first. Thus at the festival, the brāhmaṇas and their wives were first offered the remnants of food, and then the others (kṣatriyas, vaiśyas and śūdras). This has always been the system, and it is still prevalent in India, even though the caste brāhmaṇas are not qualified. The system is still current due to the varṇāśrama institutional rules and regulations.
(Sri Caitanya Caritamrta-----2:4:84-----purport).

There are also nondevotees who compose unauthorized songs, who establish different temples for money, who worship the Deity as priests for salaries, who accept caste brahmanism as all in all, and who do not know the value of a pure Vaiṣṇava. Actually the caste brāhmaṇas of the smārta community are opposed to the principles of the Sātvata-pañcarātra. Furthermore, there are many Māyāvādīs and those overly addicted to material sense enjoyment. None of these can be compared to a person who is purely engaged in preaching Kṛṣṇa consciousness. Every Kṛṣṇa conscious person is constantly endeavoring to utilize different transcendental devices in the service of the Lord. Such a devotee renounces all material enjoyment and completely dedicates himself to the service of his spiritual master and Lord Śrī Caitanya Mahāprabhu.
(Sri Caitanya Caritamrta-----2:8:83-----purport).

Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura remarks that although the brāhmaṇa did not belong to a superior community, he fearlessly chastised so-called caste brāhmaṇas because he was situated on the platform of pure devotional service. There are people who are opposed to Śrī Caitanya Mahāprabhu's accepting a Vaiṣṇava belonging to a lower caste. Such people do not consider mahā-prasādam transcendental, and therefore they are described here as mūrkha (foolish) and duṣṭa (mischievous). A pure devotee has the power to challenge such high-caste people, and his brave statements are not to be considered proud or puffed up. On the contrary, he is to be considered straightforward. Such a person does not like to flatter high-class brāhmaṇas who belong to the non-Vaiṣṇava community.
(Sri Caitanya Caritamrta-----2:17:183-----purport).

A pure devotee is above a brāhmaṇa; therefore it is not incompatible to offer the sacred thread to devotees in Europe, America, Australia, Japan, Canada, and so on. Sometimes these pure devotees, who have been accepted by Śrī Caitanya Mahāprabhu, are not allowed to enter certain temples in India. Also, some high-caste brāhmaṇas and gosvāmīs refuse to take prasādam in the temples of the International Society for Krishna Consciousness. Actually this is against the instruction of Śrī Caitanya Mahāprabhu. Devotees can come from any country, and they can belong to any creed or race.
(Sri Caitanya Caritamrta-----2:25:120-----purport).

From Benāpola, Haridāsa Ṭhākura went to the village known as Cāndapura, where he lived at the house of Balarāma Ācārya. Thereafter, Haridāsa Ṭhākura was received by two brothers known as Hiraṇya and Govardhana Majumadāra, but in the course of a discussion he was offended by a caste brāhmaṇa known as Gopāla Cakravartī. Because of this offense, Gopāla Cakravartī was punished by being afflicted with leprosy.
(Sri Caitanya Caritamrta-----3:3---summary).

Kṛṣṇa was once addressed by His friend thus: "My dear Mukunda (Kṛṣṇa), due to their being separated from You, the cowherd boys are standing just like neglected Deities in the house of a professional brāhmaṇa." There is a class of professional brāhmaṇas who take to Deity worship as a means of earning their livelihood. Brāhmaṇas in this class are not very interested in the Deity; they are interested mainly in the money they can earn as holy men. So the Deities worshiped by such professional brāhmaṇas are not properly decorated, Their dress is not changed, and Their bodies are not cleaned. They look dirty and are not very attractive. Actually, Deity worship should be done very carefully: the dress should be changed daily, and as far as possible there should be ornaments.
(Nectar of Devotion).

This is because there is no performance of the purificatory processes known as saṁskāras, which begin from the time of the mother's pregnancy and continue up to the point of the individual's death. No one can be classified as a member of a particular caste, especially of a higher caste—brāhmaṇa, kṣatriya or vaiśya—simply by birthright. If one is not purified by the process of the seed-giving ceremony, or garbhādhāna-saṁskāra, he is immediately classified amongst the śūdras because only the śūdras do not undergo this purificatory process.
(Krsna Book).

However, at this juncture we must avoid committing a mistake. Our present discussion does not include the materialistic caste brāhmaṇas' offering of oblations or fruitive work to Lord Nārāyaṇa. Because such offerings are not devoid of lust, there is no love or devotion in them. We have earlier established that the main criterion for a proper offering to the Lord is that it be done with love and devotion, for the satisfaction of His senses. Hence we must understand that only those things or services offered solely for the pleasure of the Supreme Lord are actually accepted by Him.
(Renunciation through Wisdom).