यज्ञे तपसि दाने च स्थितिः सदिति चोच्यते।कर्म चैव तदर्थीयं सदित्येवाभिधीयते
yajñe tapasi dāne cha sthitiḥ sad iti chochyate karma chaiva tad-arthīyaṁ sad ity evābhidhīyate
Conviction in sacrifice, austerity, and giving is also called Sat. So too, an action done only for the Lord's sake.
Translated by Shri Purohit Swami
Steadfastness in sacrifice, austerity, and gift is also called 'Sat', and action in connection with these, or for the sake of the Supreme, is also called 'Sat'.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
yajñe—in sacrifice; tapasi—in penance; dāne—in charity; cha—and; sthitiḥ—established in steadiness; sat—the syllable Sat; iti—thus; cha—and; uchyate—is pronounced; karma—action; cha—and; eva—indeed; tat-arthīyam—for such purposes; sat—the syllable Sat; iti—thus; eva—indeed; abhidhīyate—is described