There are four sorts of Sacrifices, viz. the Loka-Sacrifice, the Sacrifice of especial rites, the eternal domestic Sacrifice, and the Sacrifice consisting in the gratification of man from his enjoyment of the five elemental substances and their compounds. From these four sorts of Sacrifice that the universe had emanated.
लोकयज्ञः क्रियायज्ञे गृहयज्ञः सनातनः। पञ्चभूमनृयज्ञश्च जज्ञे सर्वमिदं जगत्॥