There are two words still current in the Hindu society: śuci and muci. Muci means cobbler, dealing with skin. "I am this skin," "I am white skin," "I am black skin," "I am American skin," "I am Indian skin"—this understanding means muci. And muci is skin expert. "This is cow skin. This is goat skin. It is lamb skin." This is... He is called muci, skin expert. Modern technology has given the title "tannery expert." So this "tannery expert," if you become tannery expert, then you are muci. So there is a Bengali proverb, muci haya śuci haya, yadi kṛṣṇa bhaje. Every one of us, we are all tannery expert and we have created so many "isms" on the basis of becoming a tannery expert. Therefore they are called muci. So muci haya śuci haya. And śuci means brāhmaṇa, pure. He has no such sense of becoming a tannery expert. He is brāhmaṇa, brahma-vit. One who knows Brahman, he is called brāhmaṇa. He is śuci. He is not more tannery expert. So therefore, it is said, if from the muci platform if you want to become śuci, really brāhmaṇa, purified, then you have to take to Kṛṣṇa conscious. Muci haya śuci haya, yadi kṛṣṇa bhaje. If one becomes Kṛṣṇa conscious, then from the platform of becoming a muci, one becomes śuci. Therefore we have no caste distinction because our process is to elevate the muci to the platform of śuci, this Kṛṣṇa consciousness movement. Actually that is the fact. We are unnecessarily becoming tannery expert. That is not the aim of life. The aim of life is to become śuci, to become brāhmaṇa, or the person who is aware of Brahman. Brahma jānātī iti brāhmaṇaḥ. This is the philosophy. But nobody is interested to become a brāhmaṇa. Everyone is interested to remain a muci and tannery expert. That is not the aim of life. So this is training. Muci haya śuci haya. One can be trained up to become a śuci from the platform of muci. And even though one is born of a śuci family, if by practice he is not Kṛṣṇa conscious, then he automatically becomes a muci. Śuci haya muci haya, yadi kṛṣṇa tyāje. If one gives up Kṛṣṇa consciousness, even though he is born in a brāhmaṇa family or even though he has practiced brāhmanism, still, on account of his not accepting Kṛṣṇa consciousness, he is accepted as muci. Śuci haya muci haya, yadi kṛṣṇa tyāje. And muci haya śuci haya, yadi kṛṣṇa bhaje: if one is Kṛṣṇa conscious, then he is śuci. This is
So this Ajāmila became śuci, brāhmaṇa. Then guru, agni. Guru, the spiritual master; agni, the fire; and atithi. Atithi means uninvited guest, hospitality. If somebody comes at your home without your invitation, he is called atithi. Tithi means particular time and date. But a person arrives at your home without any invitation on particular time and date, he is called atithi. Atithi-satkāra. This is also one of the items of Vedic culture. Atithi-satkāra. So the sannyāsīs especially, they are begging from door to door. So they have no fixed up program in which door he will go on which date. No. Anywhere they approach. Therefore atithi means generally the brahmacārī and the sannyāsa. Brahmacārī is also begging alms from door to door, and a sannyāsī also allowed, but door to door does not mean that he would collect more than is necessity. But he does not cook. A sannyāsī goes to a pure householder's life, er, home, because generally in a brāhmaṇa's house or kṣatriya or vaiśya... But not to a śūdra. This is restriction. Why? Because the three upper classes, brāhmaṇa, kṣatriya, vaiśya, especially the brāhmaṇa—they are considered the topmost—they have got Viṣṇu worship at home. Still in all brāhmaṇa's family, ancestral śālagrāma-śilā is worshiped in a brāhmaṇa family. So also in kṣatriya family also. So these sannyāsīs go to a brāhmaṇa family because it is known fact the brāhmaṇas are engaged in worshiping Viṣṇu.