तत्सदिति निर्देशो ब्रह्मणस्त्रिविधः स्मृतः।
ब्राह्मणास्तेन वेदाश्च यज्ञाश्च विहिताः पुरा।।17.23।।
17.23 Om Tat Sat: This has been declared to be the triple designation of Brahman. By that were created formerly, the Brahmanas, the Vedas and the sacrifices.
17.23 Om, tat, sat-iti, this; is smrtah, considered, regarded, in the Vedanta, by the knowers of Brahman; to be the trividhah, threefold; nirdesah, designation, mention by name-nirdesa is that by which a thing is specified; brahmanah, of Brahman. The Brahmanas and the Vedas and the sacrifices were vihitah, ordainded, [When some defect arises in sacrifice etc., then this is corrected by uttering one of these words-Om, tat, sat.] created; tena, by that threefold designation; pura, in the days of yore [In the beginning of creation by Prajapati.]-this is said by way of eulogizing the designation.
Om tatsaditi nirdesho brahmanas trividhah smritah; Braahmanaastena vedaashcha yajnaashcha vihitaah puraa.
om tat sat—syllables representing aspects of transcendence; iti—thus; nirdeśhaḥ—symbolic representatives; brahmaṇaḥ—the Supreme Absolute Truth; tri-vidhaḥ—of three kinds; smṛitaḥ—have been declared; brāhmaṇāḥ—the priests; tena—from them; vedāḥ—scriptures; cha—and; yajñāḥ—sacrifice; cha—and; vihitāḥ—came about; purā—from the beginning of creation
