17.27 And the steadfastness in sacrifice, austerity and charity is spoken of as sat. And even the action meant for these is, verily, called as sat (good).
English Translation Of Sri Shankaracharya's Sanskrit Commentary By Swami Gambirananda
17.27 And sthitih, steadfastness; that is yajne, in sacrifice, in the act of sacrifice; the steadfastness that is tapasi, in austerity; and the steadfastness that is dane, in charity; that ucyate, is spoken of; sat iti, as sat, by learned persons. And eva, even; the karma, action; tad-arthiyam, meant for these-for sacrifice, charity and austerity, or for Him whose names are under discussion, i.e. for God; is eva, verily; abhidhiyate, called; sat iti, as sat (good).
Thus, in this way, the acts of sacrifice, austerity, etc., even when they are devoid of sattva and goodness, become good and endued with sattva by he use of the three names of Brahman with faith.
And as regards those (sacrifice etc.), since in all cases everything is performed with a predominance of faith, therefore-
