Some perform the sacrifice for gaining possessions, some the Sacrifice of penance; others again Sacrifice of concentration of mind; some perform the Sacrifice of Vedic study, some that of knowledge, others again the Sacrifice of asceticism of rigid vows.
द्रव्ययज्ञास्तपोयज्ञा योगयज्ञास्तथापरे। स्वाध्यायज्ञानयज्ञाश्च यतयः संशितव्रताः॥