अफलाकाङ्क्षिभिर्यज्ञो विधिदृष्टो य इज्यते।
यष्टव्यमेवेति मनः समाधाय स सात्त्विकः।।17.11।।
17.11 That sacrifice which is in accordance with the injunctions, (and is) performed by persons who do not hanker after results, and with the mental conviction that it is surely obligatory, is done through sattva.
17.11 That sacrifice is marked by Sattva which is offered by those desiring no fruits, with the conviction, i.e., with the idea that it ought to be performed or that it should be offered for its own sake as worship of the Lord as enjoined in the injunctions of the Sastras, i.e., with hymns, right materials and proper rituals.
Aphalaakaangkshibhiryajno vidhidrishto ya ijyate; Yashtavyameveti manah samaadhaaya sa saattwikah.
aphala-ākāṅkṣhibhiḥ—without expectation of any reward; yajñaḥ—sacrifice; vidhi-driṣhṭaḥ—that is in accordance with the scriptural injunctions; yaḥ—which; ijyate—is performed; yaṣhṭavyam-eva-iti—ought to be offered; manaḥ—mind; samādhāya—with conviction; saḥ—that; sāttvikaḥ—of the nature of goodness