91:1.5

Pure men worship the Gods; the passionate the gnomes and giants; the others, the dark folk, worship ghosts and troops of nature-spirits. The men who perform severe austerities, unenjoined by the Scriptures, wedded to vanity and egoism, impelled by the force of their desires and passions, Unintelligent, tormenting the aggregated elements forming the body, and Me also, seated in the inner body, know these demoniacal in their resolves.

They who worship the Shining Ones go to the Shining Ones; to the Ancestors go the Ancestor-worshippers; to the Elements go those who sacrifice to Elementals; but My worshippers come unto Me. He who offereth to Me with devotion a leaf, a flower, a fruit, water, that I accept from the striving self, offered as it is with devotion. Whatsoever thou doest, whatsoever thou eatest, whatsoever thou offerest, whatsoever thou givest, whatsoever thou doest of austerity, O Kaunteya, do thou that as an offering unto Me.

The sacrifice contrary to the ordinances, without distributing food, devoid of words of power and without gifts, empty of faith, is said to be of darkness. Worship given to the Gods, to the twice-born, to the teachers and to the wise, purity, straightforwardness, continence and harmlessness, are called the austerity of the body. Speech causing no annoyance, truthful, pleasant and beneficial, the practice of the study of the Scriptures, are called the austerity of speech.