One frees oneself from his debt to the great Rishis by studying the Vedas. One satisfies his debts to the gods by celebrating sacrifices. By performing the rites of the Shraddha one satisfies the debts to the Pitris. One satisfies the debt to his fellow men by doing good to them. son son
स्वाध्यायेन महर्षिभ्यो देवेभ्यो यज्ञकर्मणा। पितृभ्यः श्राद्धदानेन नृणामभ्यर्चनेन च॥