If one poses himself a great devotee but does not follow the principles of śruti, smṛti, purāṇa and Nārada Pañcarātra, and the rules and regulation thereof, then his presentation as great devotee is simply disturbance.
According to this Hari-bhakti-vilāsa and according to the direction of the Gosvāmīs in the Lord Caitanya's line, if one does not follow the principles of Vedas, principles of the smṛti or corollaries, Vedic literature . . . just like Bhagavad-gītā is called smṛti, and Śrīmad-Bhāgavatam, Mahā-purāṇa.
So śruti, smṛti, purāṇAdi, and pāñcarātriki-vidhim, Nārada Pañcarātra. Without following the rules and regulation of these scriptures, if one poses himself as devotee of Kṛṣṇa, aikāntikī harer bhaktiḥ—harer means Lord; bhakti, devotional service—he is disturbance to the society.
So the general rule is that if one is inquisitive . . . just as we follow in our this Kṛṣṇa consciousness Society, we ask everyone to come. We don't make any imposition that with such-and-such qualification one can sit here or hear. No.
All these students who are initiated, they know we don't impose anything, "You must be such and such," "You must be such and such educated," "You must be Hindu" or "You must be Brahmin" or "You must be white" or "black . . ." No such restriction. Anyone. This is universal. Chanting Hare Kṛṣṇa, everyone is welcome. Chant Hare Kṛṣṇa. That's all. And hear something from Bhagavad-gītā.