Bhagavad Gītā Chapter 17, Verse 24: Krishna to Arjuna — Śraddhātraya-Vibhāga-Yoga
Those who speak of Brahman always begin their acts of sacrifice, giving, and austerity by uttering *Om*, as the scriptures prescribe.
Bhāṣyakāra purports
- Śaṅkaraadvaita
Because Om (pranava) is the supreme indicator of nirguna Brahman, the scripturally enjoined rites of yajna (sacrifice), dana (giving), and tapas (austerity) of brahma-vadins (those who speak and seek Brahman) always commence after uttering Om. Shankara's bhashya is terse: the verb ‘udahriya' (having uttered) frames Om as the indispensable upakrama (opening act) that orients all Vedic action toward the non-dual ground. Without this invocation the acts remain merely worldly; with it they point inward toward Brahman-realization as their true telos.
- Rāmānujaviśiṣṭādvaita
Ramanuja reads brahma-vadins as the tri-varna (three twice-born varnas) who are veda-vadins — those whose entire life is structured by Vedic injunction. He notes that the Vedas themselves begin with Om, so uttering Om before yajna-dana-tapas enacts the same word-anvaya (syntactic alignment) that links the performer to Bhagavan who is the inner life of all Vedic utterance. For Ramanuja this is kainkarya (loving service): the ritualist aligns his act with the Lord's own self-disclosure in shruti, making every sacrifice an act of upasana (meditative devotion) rather than mere karma.
- Madhvadvaita
Reconstructed from the dvaita school's doctrine, not translated from Madhva's commentary at this verse.
Om is the sonic body of Viṣṇu-Hari, the one svatantra (independently real, self-sufficient) Lord on whom all paratantra (eternally dependent) jīvas and matter rest. Tasmāt—because of this real ontological subordination—the brahma-vādinaḥ, those who speak of Brahman as Hari alone, prefix every act of yajña (sacrifice), dāna (gift), and tapas (austerity) with om ity udāhṛtya: the utterance is not a ritual formality but an explicit acknowledgment of bheda (real distinction) between the worshipper and the worshipped. The vidhānoktāḥ kriyāḥ—acts enjoined by scriptural prescription—acquire their validity only when initiated under Om, because it is Om that orients the action toward Hari as its sole proper recipient and fruit-giver. Karma performed without this prefix lacks the directedness that transforms paratantra action into bhakti (devotion as ontological subordination). The satatam—‘always', ‘without intermission'—registers that taratamya (graded ontological hierarchy) governs every moment of the qualified agent's practice: no act exits the pañca-bheda (five-fold real distinction: Lord–jīva, Lord–matter, jīva–jīva, jīva–matter, matter–matter) order, and Om names that order's apex at the start of each rite.
- Vallabhaśuddhādvaita
Vallabha's commentary is spare — ‘spastam' (self-evident) — but his Shuddhadvaita frame fills it decisively: Om is the sound-form of Krishna himself, not an abstract Brahman-pointer. When the brahma-vadin utters Om before yajna, he enters Krishna's own lila-space; the act is no longer ritual obligation but prasada-reception, a gift Krishna initiates and the devotee completes. The three acts — yajna, dana, tapas — become three modalities of pushti (nourishment by divine grace) rather than independent human achievements.
- Śrīdharabhakti
Shridhara reads this verse as the opening of a four-verse sequence (17.24-27) that will demonstrate the excellence of Om, Tat, and Sat in turn. His key gloss: when acts are done with the Om-invocation, they acquire saguna excellence — ‘saguna bhavanti' — meaning even an incomplete rite (anga-vaikayla) is elevated and perfected by the prefixed pranava. The brahma-vadins are the veda-vadins whose constant practice (satatam) is underwritten by this sound. For Shridhara the devotional import is that no act offered with Om is wasted or defective; divine presence, invoked by the name, makes it whole.
- Madhusūdanaadvaita-bhakti
Madhusudan Sarasvati sets this verse as the first of four that collectively explain the composite Brahman-indicator Om-Tat-Sat, analogous to how the three syllables A-U-M each require explanation before the full pranava is understood. His distinctive synthesis: Om is already well-known in shruti as ‘Brahmanaama' (the name of Brahman), and merely uttering one component of Om removes ritual defect — ‘yasyaikavayava-ucharanadapyavaigunyam' — so uttering the complete Om ensures perfect vaigunyarahitya (freedom from deficiency). This is the highest stuti (praise) of Om: it is simultaneously the jnana-marker of nirguna Brahman (Advaita) and the loving invocation of the personal Lord (bhakti), and both registers are active every time a brahma-vadin opens his lips in practice.