sevā svāminy amāyayā
amantra-yajño hy asteyaṁ
It is everyone’s experience that workers or servants are generally accustomed to stealing. A first-class servant is one who does not steal. Here it is recommended that a first-class śūdra must remain very clean, must not steal or speak lies, and must always render service to his master. A śūdra may attend sacrifices and Vedic ritualistic ceremonies along with his master, but he should not utter the mantras, for these may be uttered only by the members of the higher sections of society. Unless one is completely pure and has been raised to the standard of a brāhmaṇa, kṣatriya or vaiśya — in other words, unless one is dvija, twice-born — the chanting of mantras will not be fruitful.