Steadfastness in sacrifice, austerity and gift is also called SAT and also, action in connection with these (for the sake of the Supreme) is called SAT.

yajñe = in sacrifice; tapasi = in penance; dāne = in charity; ca = also; sthitiḥ = the situation; sat = the Supreme; iti = thus; ca = and; ucyate = is pronounced; karma = work; ca = also; eva = certainly; tat = for that; arthiyaṃ = meant; sat = the Supreme; iti = thus; eva = certainly; abhidhīyate = is indicated.;