Lord Śrī Caitanya revived the original Vedic system, and He elevated Ṭhākura Haridāsa to the position of nāmācārya, or the authority in preaching the glories of the holy name of the Lord, although His Holiness Śrīla Haridāsa Ṭhākura was pleased to appear in a family of Mohammedans.
(Srimad Bhagavatam---1:18:18---purport).

The Lord may dictate to tigers and other jungle animals not to disturb His devotee. Haridāsa Ṭhākura, a great devotee of Lord Śrī Caitanya, used to live in such a cave, and by chance a great venomous snake was a co-partner of the cave. Some admirer of Ṭhākura Haridāsa who had to visit the Ṭhākura every day feared the snake and suggested that the Ṭhākura leave that place. Because his devotees were afraid of the snake and they were regularly visiting the cave, Ṭhākura Haridāsa agreed to the proposal on their account. But as soon as this was settled, the snake actually crawled out of its hole in the cave and left the cave for good before everyone present. By the dictation of the Lord, who lived also within the heart of the snake, the snake gave preference to Haridāsa and decided to leave the place and not disturb him. So this is a tangible example of how the Lord gives protection to a bona fide devotee likeṬhākura Haridāsa.
(Srimad Bhagavatam---2:2:5---purport).

It appears from the talks of Kaśyapa with his wife that he was a worshiper of Lord Śiva, and although he knew that Lord Śiva would not be pleased with him for such a forbidden act, he was obliged to act by his wife's desire, and thus he offered his obeisances unto fate. He knew that the child born of such untimely sexual intercourse would certainly not be a good child, but could not protect himself because he was too obligated to his wife. In a similar case, however, when Ṭhākura Haridāsa was tempted by a public prostitute at the dead of night, he avoided the allurement because of his perfection in Kṛṣṇa consciousness. That is the difference between a Kṛṣṇa conscious person and others. Kaśyapa Muni was greatly learned and enlightened, and he knew all the rules and regulations of systematic life, yet he failed to protect himself from the attack of sex desire. Ṭhākura Haridāsa was not born of a brāhmaṇa family, nor was he himself brāhmaṇa, yet he could protect himself from such an attack due to his being Kṛṣṇa conscious. Ṭhākura Haridāsa used to chant the holy name of the Lord three hundred thousand times daily.
(Srimad Bhagavatam---3:14:31---purport).

There is a very good example in the life of Haridāsa Ṭhākura. When Caitanya Mahāprabhu was residing at Jagannātha purī, Haridāsa Ṭhākura, who happened to be Muhammadan by birth, was with Him. In Hindu temples, especially in those days, no one but a Hindu was allowed to enter. Although Haridāsa Ṭhākura was the greatest of all Hindus in his behavior, he considered himself a Muhammadan and did not enter the temple. Lord Caitanya could understand his humility, and since he did not go to see the temple, Lord Caitanya Himself, who is nondifferent from Jagannātha, used to come and sit with Haridāsa Ṭhākura daily.
(Srimad Bhagavatam---3:16:2---purport).

The best example of this is found in the life of Advaita Prabhu in his dealings with Haridāsa Ṭhākura. Even though Haridāsa was born of a Muhammadan family, Advaita Prabhu offered him the first dish of prasāda after the performance of a sacred fire ceremony. Haridāsa Ṭhākura informed him that he was born of a Muhammadan family and asked why Advaita Prabhu was offering the first dish to a Muhammadan instead of an elevated brāhmaṇa. Out of his humbleness, Haridāsa condemned himself a Muhammadan, but Advaita Prabhu, being an experienced devotee, accepted him as a real brāhmaṇa. Advaita Prabhu asserted that by offering the first dish to Haridāsa Ṭhākura, he was getting the result of feeding one hundred thousand brāhmaṇas.
(Srimad Bhagavatam---3:16:8---purport).

In this regard, Caitanya-caritāmṛta (Antya 3.177-188) describes Haridāsa Ṭhākura's confirmation of the effect of chanting the holy name of the Lord.
keha bale—'nāma haite haya pāpa-kṣaya'
keha bale—'nāma haite jīvera mokṣa haya'
Some say that by chanting the holy name of the Lord one is freed from all the reactions of sinful life, and others say that by chanting the holy name of the Lord one attains liberation from material bondage.
haridāsa kahena,—"nāmera ei dui phala naya
nāmera phale kṛṣṇa-pade prema upajaya
Haridāsa Ṭhākura, however, said that the desired result of chanting the holy name of the Lord is not that one is liberated from material bondage or freed from the reactions of sinful life. The actual result of chanting the holy name of the Lord is that one awakens his dormant Kṛṣṇa consciousness, his loving service to the Lord.
(Srimad Bhagavatam---5:24:20---purport).

A Vaiṣṇava is in a higher position than a jñānī, and therefore Advaita Ācārya selected Haridāsa Ṭhākura to be the person to accept His charity. The Supreme Lord also says:
na me 'bhaktaś catur-vedī
mad-bhaktaḥ śva-pacaḥ priyaḥ
tasmai deyaṁ tato grāhyaṁ
sa ca pūjyo yathā hy aham
"Even though a person is a very learned scholar of the Sanskrit Vedic literatures, he is not accepted as My devotee unless he is pure in devotional service. However, even though a person is born in a family of dog-eaters, he is very dear to Me if he is a pure devotee who has no motive to enjoy fruitive activity or mental speculation. Indeed, all respect should be given to him, and whatever he offers should be accepted. Such devotees are as worshipable as I am."
(Srimad Bhagavatam---7:15:2---purport).

Sometimes devotees are personally attacked with violence. Lord Jesus Christ was crucified, Haridāsa Ṭhākura was caned in twenty-two marketplaces, and Lord Caitanya's principal assistant, Nityānanda, was violently attacked by Jagāi and Mādhāi. But still they were tolerant because their mission was to deliver the fallen souls. One of the qualifications of a sādhu is that he is very tolerant and is merciful to all fallen souls.
(Srimad Bhagavatam---3:25:21---purport).

When Śrī Caitanya Mahāprabhu inquired from Haridāsa Ṭhākura how he was to benefit living entities other than humans, Śrīla Haridāsa Ṭhākura replied that the Hare Kṛṣṇa mahā-mantra is so potent that if it is chanted loudly, everyone will benefit, including the lower species of life.
(Sri Caitanya Caritamrta---1:9:39---purport).

It is stated in the Caitanya-bhāgavata, Ādi-khaṇḍa, Chapter Two, that Haridāsa Ṭhākura was born in a village known as Buḍhana but after some time came to live on the bank of the Ganges at Phuliyā, near Śāntipura. From the description of his chastisement by a Muslim magistrate, which is found in the Sixteenth Chapter of the Ādi-khaṇḍa of Caitanya-bhāgavata, we can understand how humble and meek Haridāsa Ṭhākura was and how he achieved the causeless mercy of the Lord.
(Sri Caitanya Caritamrta---1:10:43---purport).

It is understood that Advaita Prabhu, at that time, was in His own paternal house at Śāntipura. Haridāsa Ṭhākura frequently used to meet Him. Coincidentally, therefore, he was also there, and upon the birth of Śrī Caitanya Mahāprabhu both of them immediately began to dance. But no one in Śāntipura could understand why those two saintly persons were dancing.
(Sri Caitanya Caritamrta---1:13:99---purport).

By the order of Lord Caitanya, both Nityānanda Prabhu and Haridāsa Ṭhākura used to preach the cult of Kṛṣṇa consciousness door to door. In the course of such preaching they found Jagāi and Mādhāi, two maddened drunken brothers, who, upon seeing them, began to chase them.
(Sri Caitanya Caritamrta---1:17:17---purport).

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).

Haridāsa Ṭhākura and the Gosvāmīs were all engaged in chanting a fixed number of rounds; therefore chanting on beads is very important for everyone, even though one may become a paramahaṁsa.
(Sri Caitanya Caritamrta---2:4:125---purport).

Although Haridāsa Ṭhākura was such a highly exalted Vaiṣṇava that he was addressed as Haridāsa Gosvāmī, he still did not like to disturb the common sense of the general populace. Haridāsa Ṭhākura was so exalted that he was addressed as ṭhākura and gosāñi, and these titles are offered to the most advanced Vaiṣṇavas. The spiritual master is generally called gosāñi, and ṭhākura is used to address the paramahaṁsas, those in the topmost rank of spirituality. Nonetheless, Haridāsa Ṭhākura did not want to go near the temple, although he was called there by Śrī Caitanya Mahāprabhu Himself. The Jagannātha temple still accepts only those Hindus who are in the varṇāśrama order. Other castes, especially those who are not Hindu, are not allowed to enter the temple. This is a long-standing regulation, and thus Haridāsa Ṭhākura, although certainly competent and qualified to enter the temple, did not want even to go near it. This is called Vaiṣṇava humility.
(Sri Caitanya Caritamrta---2:11:165---purport).

We should always remember that it was Śrī Caitanya Mahāprabhu Himself who wanted such a place, either for Himself or Haridāsa Ṭhākura. No one can suddenly attain the level of Haridāsa Ṭhākura and sit down in a solitary place to chant the Hare Kṛṣṇa mahā-mantra and remember the lotus feet of the Lord. Only an exalted person likeHaridāsa Ṭhākura or Śrī Caitanya Mahāprabhu, who is personally exhibiting the proper behavior for an ācārya, can engage in such a practice.
(Sri Caitanya Caritamrta---2:11:176---purport).

Even at Jagannātha Purī the Lord chanted the Hare Kṛṣṇa mahā-mantra in great meetings at the Jagannātha temple. The point is that one should not try to imitate Haridāsa Ṭhākura at the beginning of one's transcendental life. One must first become very mature in devotion and thus receive the approval of Śrī Caitanya Mahāprabhu. Only at such a time may one actually sit down peacefully in a solitary place to chant the Hare Kṛṣṇa mahā-mantra and remember the lotus feet of the Lord. The senses are very strong, and if a neophyte devotee imitates Haridāsa Ṭhākura, his enemies (kāma, krodha, lobha, moha, mada and mātsarya) will disturb and fatigue him. Instead of chanting the Hare Kṛṣṇa mahā-mantra, the neophyte will simply sleep soundly.
(Sri Caitanya Caritamrta---2:11:176---purport).

Śrī Caitanya Mahāprabhu once asked Haridāsa Ṭhākura how trees and plants could be delivered, and Haridāsa Ṭhākura replied that the loud chanting of the Hare Kṛṣṇa mahā-mantra would benefit not only trees and plants but insects and all other living beings. One should therefore not be disturbed by the loud chanting of Hare Kṛṣṇa, for it is beneficial not only to the chanter but to everyone who gets an opportunity to hear.
(Sri Caitanya Caritamrta---2:17:45---purport).

To live with devotees or to live in a temple means to associate with the śravaṇa-kīrtana process. Sometimes neophyte devotees think that they can continue the śravaṇa-kīrtana process without worshiping the Deity, but the execution of such śravaṇa-kīrtana is meant for highly developed devotees like Haridāsa Ṭhākura, who engaged in the śravaṇa-kīrtana process without worshiping the Deity. However, one should not falsely imitate Haridāsa Ṭhākura and abandon Deity worship just to try to engage in śravaṇa-kīrtana. This is not possible for neophyte devotees.
(Sri Caitanya Caritamrta---2:19;152---purport).

On another occasion, Śrī Caitanya Mahāprabhu once inquired from Haridāsa Ṭhākura, who was known as Brahma Haridāsa, how the yavanas, or persons bereft of Vedic culture, would be delivered in Kali-yuga. Haridāsa Ṭhākura replied that their deliverance would be possible if they very loudly chanted the Hare Kṛṣṇa mantra, for hearing the Hare Kṛṣṇa mantra chanted loudly, even with but little realization, would help them.
(Sri Caitanya Caritamrta---3:3---summary).

After describing this incident, the author of the Caitanya-caritāmṛta also describes how Haridāsa Ṭhākura was tested at Benāpola, a village near Śāntipura. A person named Rāmacandra Khān, who was envious of Haridāsa Ṭhākura, sent a professional prostitute to attempt to defame him, but by the mercy of Haridāsa Ṭhākura, even the prostitute was delivered. Because of offending a pure Vaiṣṇava, Rāmacandra Khān was later cursed by Nityānanda Prabhu and ruined.
(Sri Caitanya Caritamrta---3:3---summary).

A person who is not purified by the prescribed process of saṁskāra is called asaṁskṛta, but if one remains kriyā-hīna even after being purified by initiation—in other words, if one fails to actually apply the principles of purity in his life—he remains an unpurified mleccha or yavana. On the other hand, we find that Haridāsa Ṭhākura, although born in a mleccha or yavana family, became Nāmācārya Haridāsa Ṭhākura because he performed the nāma-yajña a minimum of 300,000 times every day.
(Sri Caitanya Caritamrta---3:3:124---purport).

Haridāsa Ṭhākura was the ideal spiritual master because he regularly chanted on his beads a prescribed number of times. Indeed, he was chanting the holy name of the Lord 300,000 times a day. Similarly, the members of the Kṛṣṇa consciousness movement chant a minimum of sixteen rounds a day, which can be done without difficulty, and at the same time they must preach the cult of Caitanya Mahāprabhu according to the gospel of Bhagavad-gītā As It Is. One who does so is quite fit to become a spiritual master for the entire world.
(Sri Caitanya Caritamrta---3:4;103---purport).

Haridāsa Ṭhākura is known as nāmācārya because it is he who preached the glories of chanting hari-nāma, the holy name of God. By using the words tomāra avatāra ("your incarnation"), Śrī Caitanya Mahāprabhu confirms that Haridāsa Ṭhākura is the incarnation of Lord Brahmā. Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura says that advanced devotees help the Supreme Personality of Godhead in His mission and that such devotees or personal associates incarnate by the will of the Supreme Lord.
(Sri Caitanya Caritamrta---3:11:25---purport).