Then Sanātana Gosvāmī, with folded hands, fell at the feet of Lord Caitanya and prayed. "My dear Lord," he said, "You have asked me to prepare the regulative principles of devotional service, but I belong to the lowest caste. I have no knowledge. I do not know how such an important task can be finished by me. If You will kindly give me some hints about the preparation of such a book on devotional service, it may be that I shall be qualified to write it."
The Lord then blessed him saying, "Whatever you write, by the grace of Kṛṣṇa, will come out of your heart and will be accepted as you have requested. I will also give you some notes that you can take down. The first and foremost point is that one should accept a bona fide spiritual master. That is the beginning of spiritual life." Lord Caitanya then requested Sanātana Gosvāmī to write down the symptoms of a true guru and the symptoms of a true devotee. The symptoms of a devotee are described in the Padma Purāṇa: A person who is a qualified brāhmaṇa and at the same time has all the symptoms of a devotee can become a spiritual master for all classes of men. Such a devotee and spiritual master must be respected as God Himself. Even though a person may be born in a very respectable brāhmaṇa family, he cannot become a bona fide spiritual master if he is not a devotee of the Lord. One should not mistakenly think that a bona fide spiritual master has to be born in a so-called brāhmaṇa family. The idea is that a spiritual master must be a qualified brāhmaṇa; that is, he must be qualified by his activities.
This is confirmed in Śrīmad-Bhāgavatam when Nārada speaks of the different symptoms characterizing the four divisions of social life. Nārada therein summarizes that brāhmaṇas, kṣatriyas, vaiśyas and śūdras should be selected by their individual qualifications. In his commentary, Śrīdhara Svāmī has noted that birth in a family of brāhmaṇas does not necessarily mean that one is a brāhmaṇa. One must be qualified with the symptoms of a brāhmaṇa, as the symptoms are described in the śāstras. In the disciplic succession of the Gauḍīya Vaiṣṇava sampradāya, there are two great ācāryas (Ṭhākura Narottama and Śyāmānanda Gosvāmī) who were not born in brāhmaṇa families but were accepted as spiritual masters by many brāhmaṇas of fame, including Gaṅgānārāyaṇa, Rāmakṛṣṇa, etc.
In this way there are symptoms which the prospective devotee evinces, and both the disciple and the spiritual master must see whether each other is eligible to become either a bona fide spiritual master or a bona fide student. One should then know that the only worshipable object is the Supreme Personality of Godhead, and one should learn the various mantras and sacred songs.
The Lord then instructed Sanātana to describe the symptoms of those persons who are eligible to accept the mantras and to describe how the mantras should be understood and perfected by ritualistic performances. Then the Lord described initiation, morning duties and duties of cleanliness—washing the face and brushing the teeth—the process of work and the prayers to be recited both in the morning and the evening. The Lord also described how one should worship the spiritual master and mark one's body with gopī-candana. He also described how one should collect the tulasī leaves and wash the room and temple of the Lord, and He also described how one should awaken Kṛṣṇa from His sleep. Lord Caitanya also described different methods for worshiping the Lord, which are the methods of the fivefold paraphernalia and fifty-fold paraphernalia. He described how one should worship the Lord by offering Him ārati five times a day, and He described how one should offer food to Kṛṣṇa and lay Him down on the bed. Lord Caitanya also spoke of the effect of going to holy places where there are different temples of the Lord and seeing the form of God in the temple. He also spoke of the glorification of the transcendental name of the Lord and the different offenses which one can commit while worshiping. In the worship of the Lord certain paraphernalia is used, such as conchshell, water, fragrant flowers, prayers and hymns, and there is circumambulation and the offering of obeisances as well. One should follow the regulative principles of puraścaraṇa and accept Kṛṣṇa prasāda, rejecting foodstuff which is not offered to Kṛṣṇa. Lord Caitanya also cautioned that one should not indulge in defaming a devotee who has the actual symptoms of a devotee.