Sanskrit
ओं तत्सदिति निर्देशो ब्रह्मणस्त्रिविधः स्मृतः । ब्राह्मणास्तेन वेदाश्च यज्ञाश्च विहिताः पुरा ॥
oṃ tat sad iti nirdeśo brahmaṇas trividhaḥ smṛtaḥ brāhmaṇās tena vedāś ca yajñāś ca vihitāḥ purā
Translation
"Aum Tat Sat," this has been considered to be the threefold designation of the Eternal. By that were ordained of old Brâhmanas, Vedas and sacrifices.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
The chapter pivots to its closing formula, and each syllable is worth unpacking since none of it survives translation intact. Om (Aum) is the praṇava, the primal invocatory sound used to open Vedic recitation and ritual; Tat (“That”) is the classical Upanishadic way of pointing at Brahman without naming it, keeping the Absolute one grammatical step removed from any specific description; Sat (“Being,” “the real,” “the good”) names what is actually, permanently so. Together the three function as a kind of stamp — a way of consecrating an act to ultimate reality rather than merely performing it correctly. The chapter’s final movement: Oṃ Tat Sat, the threefold name of Brahman, invoked to consecrate an act. It answers Arjuna’s opening worry from a different angle — an act done outside the letter of scripture can still be aligned with the absolute by the intention these syllables mark.
Study deeper
Word by word
- oṃ tat sad iti nirdeśoओं तत् सद् इति निर्देशो
- 'Oṃ Tat Sat' — this designation (om + tat + sat + iti + nirdeśaḥ)
- brahmaṇas trividhaḥ smṛtaḥब्रह्मणस् त्रिविधः स्मृतः
- of Brahman is remembered as threefold (brahmaṇaḥ + trividhaḥ + smṛtaḥ)
- brāhmaṇās tena vedāś caब्राह्मणास् तेन वेदाश् च
- by it the brāhmaṇas and the Vedas (brāhmaṇāḥ + tena + vedāḥ + ca)
- yajñāś ca vihitāḥ purāयज्ञाश् च विहिताः पुरा
- and the sacrifices were ordained of old (yajñāḥ + ca + vihitāḥ + purā)
Commentary
Site Commentary
Notice the direction of authority the verse claims: Om Tat Sat isn’t described as something the Vedas or the priesthood sanctioned — it’s the reverse, tena (“by that”) Brahmins, Vedas, and sacrifices were “ordained of old.” The formula is positioned as grounding the institutions, not the other way around, which quietly relocates ultimate authority away from any particular text or office and onto three syllables that no institution invented.
Original commentary written for this site · © Amit Singh — original commentary
Apply this verse
Lessons
Personal
- When you're deciding what actually grounds your values, check whether you've got the authority chain backwards — sometimes the institution or credential you're deferring to was supposed to derive its legitimacy from a deeper principle, not grant legitimacy to it.
Professional
- When a process or governance body claims final authority, ask what deeper principle that body was actually created to serve — if the process has started granting itself authority independent of that founding purpose, the chain of legitimacy has likely inverted.
Family & Social
- If a family tradition or rule has started to feel like the point in itself, trace it back to the value it was originally meant to serve — traditions are supposed to be grounded in something deeper, not become the ultimate authority on their own.
Ask yourself
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