89:4.4

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.

The righteous, who eat the remains of the sacrifice, are freed from all sins; but the impious, who dress food for their own sakes, they verily eat sin. From food creatures become; from rain is the production of food; rain proceedeth from sacrifice; sacrifice ariseth out of action. Know thou that from Brahma action groweth, and Brahma from the Imperishable cometh. Therefore the Eternal, the all-permeating, is ever present in sacrifice.

Yet others the sacrifice of wealth, the sacrifice of austerity, the sacrifice of yoga, the sacrifice of silent reading and wisdom, men concentrated and of effectual vows; Yet others pour as sacrifice the outgoing breath in the incoming, and the incoming in the outgoing, restraining the flow of the outgoing and incoming breaths, solely absorbed in the control of breathing.