श्रद्धया परया तप्तं तपस्तत्ित्रविधं नरैः।अफलाकाङ्क्षिभिर्युक्तैः सात्त्विकं परिचक्षते।।17.17।।
śhraddhayā parayā taptaṁ tapas tat tri-vidhaṁ naraiḥ aphalākāṅkṣhibhir yuktaiḥ sāttvikaṁ parichakṣhate
śhraddhayā—with faith; parayā—transcendental; taptam—practiced; tapaḥ—austerity; tat—that; tri-vidham—three-fold; naraiḥ—by persons; aphala-ākāṅkṣhibhiḥ—without yearning for material rewards; yuktaiḥ—steadfast; sāttvikam—in the mode of goodness; parichakṣhate—are designated
This threefold austerity, practiced by steadfast men, with the utmost faith, desiring no reward, is called Sattvic.
17.17 श्रद्धया with faith? परया highest? तप्तम् practised? तपः austerity? तत् that? त्रिविधम् threefold? नरैः by men? अफलाकाङ्क्षिभिः desiring no fruit? युक्तैः steadfast? सात्त्विकम् Sattvic? परिचक्षते (they) declare.Commentary Trividham Threefold -- physical? vocal and mental.Yuktaih Steadfast Balanced in mind? unaffected in success and failure.Sraddhaya With faith With belief in the existence of God? in the words of the preceptor? in the teachings of the scriptures and in ones own Self.