The proper performance of these eternal duties, viz., the worship of the gods, the study of the Vedas, and the gratification of the Pitris, as also respectful services to the preceptor,-is the austerest of penances.
देववंशान् ब्रह्मवंशान् पितृवंशांश्च शाश्वतान्। संविभज्य गुरोश्चर्यां तद् वै दुष्करमुच्यते॥