Mahabharata 12.227.2

12.227.2

vedavādeṣu kuśalā hyadhyātmakuśalāśca ye |
sattvavanto mahābhāgāḥ paśyanti prabhavāpyayau || 2 ||

"Vyasa said, 'The knowledge called Trayi which occurs in the Vedas and their branches should be acquired. That knowledge is to be derived from the Richs, the Samans, and the sciences called Varna and Akshara. There are besides, the Yajuses and the Atharvans. In the six kinds of acts indicated in these, dwells the Divine Being. They that are well-versed in the declarations of the Vedas, that have knowledge of the Soul, that are attached to the quality of Goodness, and that are highly blessed, succeed in understanding the origin and the end of all things. A Brahmana should live in the observance of the duties laid down in the Vedas. He should do all his acts like a good man of restrained soul. He should earn his livelihood without injuring any creature. Having derived knowledge from the good and wise, he should control his passions and propensities. Well-versed in the scriptures, he should practise those duties that have been laid down for him, and do all acts in this world guided by the quality of goodness. Leading even the domestic mode of life., the Brahmana should be observant of the six acts already spoken of. His heart full of faith, he should worship the deities in the five well-known sacrifices. Endued with patience, never heedless, having self-control, conversant with duties, with a cleansed soul, divested of joy, pride, and wrath, the Brahmana should never sink in languor.