In this connection, Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura comments that Advaita Ācārya took initiation from Mādhavendra Purī, who was a sannyāsī in the disciplic succession of the Madhva-sampradāya. According to Śrī Caitanya Mahāprabhu:
kibā vipra kibā nyāsī śūdra kene naya,
yei kṛṣṇa-tattva-vettā, sei ‘guru’ haya
“A person may be a brāhmaṇa, a sannyāsī, a śūdra or whatever, but if he is well conversant in the science of Kṛṣṇa, he can become a guru.” (Cc. Madhya 8.128) This statement is supported by Śrī Mādhavendra Purī. According to the pañcarātra injunction, only a householder brāhmaṇa can initiate. Others cannot. When a person is initiated, it is assumed that he has become a brāhmaṇa; without being initiated by a proper brāhmaṇa, one cannot be converted into a brāhmaṇa. In other words, unless one is a brāhmaṇa, he cannot make another a brāhmaṇa. A gṛhastha-brāhmaṇa partaking of the varṇāśrama-dharma institution can secure various types of paraphernalia to worship Lord Viṣṇu through his honest labor. Actually, people beg to be initiated by these householder brāhmaṇas just to become successful in the varṇāśrama institution or to become free from material desires. It is therefore necessary for a spiritual master in the gṛhastha-āśrama to be a strict Vaiṣṇava. A spiritual master from the sannyāsa order has very little opportunity to perform arcana, Deity worship, but when one accepts a spiritual master from the transcendental sannyāsīs, the principle of Deity worship is not at all neglected. To implement this conclusion, Śrī Caitanya Mahāprabhu gave us His opinion in the verse kibā vipra kibā nyāsī, etc. This indicates that the Lord understood the weakness of society in its maintaining that only a gṛhastha-brāhmaṇa should be a spiritual master. Śrī Caitanya Mahāprabhu indicated that it does not matter whether the spiritual master is a gṛhastha (householder), a sannyāsī or even a śūdra. A spiritual master simply must be conversant in the essence of the śāstra; he must understand the Supreme Personality of Godhead. Only then can one become a spiritual master. Dīkṣā actually means initiating a disciple with transcendental knowledge by which he becomes freed from all material contamination.
(Sri Caitanya Caritamrta-----2:4:111-----purport).

After this, Śrī Caitanya Mahāprabhu washed the Guṇḍicā temple before the Ratha-yātrā took place. He then took His bath at Indradyumna Lake and partook of prasādam in the garden nearby. While Śrī Caitanya Mahāprabhu washed the temple of Guṇḍicā, a Gauḍīya Vaiṣṇava washed the lotus feet of the Lord and drank the water. This incident is very significant, for it awoke within the devotee ecstatic love. Then the son of Advaita Prabhu named Gopāla fainted during kīrtana, and when he did not come to his senses, Śrī Caitanya Mahāprabhu favored him by awakening him. There was also some humorous talk between Nityānanda Prabhu and Advaita Prabhu during prasādam. Advaita Prabhu said that Nityānanda Prabhu was unknown to anyone and that it was not the duty of a householder brāhmaṇa to accept dinner with a person unknown in society. In answer to this humorous statement, Śrī Nityānanda Prabhu replied that Advaita Ācārya was a monist and that one could not know how his mind could be turned by eating with such an impersonalist. The conversation of these two prabhus-Nityānanda Prabhu and Advaita Prabhu-carried a deep meaning that only an intelligent man can understand. After all the Vaiṣṇavas finished their luncheon, Svarūpa Dāmodara and others took their prasādam within the room. Śrī Caitanya Mahāprabhu took great pleasure when He saw the Jagannātha Deity after the period of the Deity’s retirement. At that time Lord Caitanya was accompanied by all the devotees, and all of them were very pleased.
(Sri Caitanya Caritamrta-----2:12:-----purport).

This brāhmaṇa knew that Caitanya Mahāprabhu was the only Vaiṣṇava sannyāsī in Benares at that time and all the others were Māyāvādīs. It is the duty of a gṛhastha to sometimes invite sannyāsīs to take food at his home. This gṛhastha-brāhmaṇa wanted to invite all the sannyāsīs to his house, but he also knew that it would be very difficult to induce Lord Caitanya Mahāprabhu to accept such an invitation because the Māyāvādī sannyāsīs would be present. Therefore he fell down at His feet and fervently appealed to the Lord to be compassionate and grant his request. Thus he humbly submitted his desire.
(Sri Caitanya Caritamrta-----1:7:54-----purport).

There was a householder brāhmaṇa in the city of Mithilā, the capital of the kingdom of Videha. This brāhmaṇa, whose name was Śrutadeva, was a great devotee of Lord Kṛṣṇa. Because he was fully Kṛṣṇa conscious and always engaged in the service of the Lord, he was completely peaceful in mind and detached from all material attraction. He was very learned and had no desire other than to be fully situated in Kṛṣṇa consciousness. Although in the order of householder life, he never took great pains to earn anything for his livelihood; he was satisfied with whatever he could achieve without much endeavor, and somehow or other he lived in that way. Every day he would get the necessities of life in just the quantity required, and not more. That was his destiny. The brāhmaṇa had no desire to get more than what he needed, and thus he was peacefully executing the regulative principles of a brāhmaṇa’s life, as enjoined in the revealed scriptures.
(Krsna Book).