Mbh 13.141.14a

"'"'Maheswara said, "The foremost of all beings in the universe viz., the Creator Brahma, ever desirous of righteous accomplishments, created the Brahmanas for rescuing all the worlds. Among all created beings, they are, verily, gods on earth. I shall at the outset tell thee what the religious acts are which they should do and what the rewards are which they win through them. That religion which has been ordained for the Brahmanas is the foremost of all religions. For the sake of the righteousness of the world, three religions were created by the Self-born One. Whenever the world is created (or re-created), those religions are created by the Grandsire. Do thou listen. These are the three eternal religions. The religion that is propounded in the Vedas is the highest; that which is propounded in the Smritis is the next in the order of importance; the third in importance is that which is based upon the practices of those who are regarded as righteous. The Brahmans possessed of learning should have the three Vedas. He should never make the study of the Vedas (or recitation of the scriptures) the means of his living.[562] He should devote himself to the three well-known acts (of making gifts, studying the Vedas, and performing sacrifices). He should transcend the three (viz., lust, wrath, and covetousness). He should be the friend of all creatures. A person that possesses these attributes is called a Brahmana. The lord of the universe declared these six acts for the observance of Brahmanas. Listen to those eternal duties. The performance of sacrifices, officiating at the sacrifices of others, the making of gifts, the acceptance of gifts, teaching, and study, are the six acts by accomplishing which a Brahmans wins religious merit. Verily, the daily study of the Vedas is a duty. Sacrifice is (another) eternal duty. The making of gifts according to the measure of his power and agreeable to the ordinance, is, in his case, much applauded.