Bhagavad Gita Chapter 17 Verse 24
भगवद् गीता अध्याय 17 श्लोक 24

तस्मादोमित्युदाहृत्य यज्ञदानतपःक्रियाः।
प्रवर्तन्ते विधानोक्ताः सततं ब्रह्मवादिनाम्।।17.24।।



English Translation - Swami Gambirananda
17.24 Therefore, acts of sacrifice, charity and austerity as prescribed through injunctions, of those who study and expound the Vedas, always commence after uttering the syllable Om.


English Translation of Ramanuja's Sanskrit Commentary
17.24 After pronouncing Om, the Vedas are recited. Thus the connection of the syllable Om with the Vedas and the rituals enjoined in the Vedas such as sacrifices has been described. As the Vedas are connected with the word Om, all belonging to the three stations of life who memorise the Vedas and perform the rituals inculcated in them, are included in the expression, expounders of the Vedas.

Now, He describes the manner by which the word Tat is connected with them:


Transliteration Bhagavad Gita 17.24Tasmaadomityudaahritya yajnadaanatapahkriyaah;
Pravartante vidhaanoktaah satatam brahmavaadinaam.


Word Meanings Bhagavad Gita 17.24tasmāt—therefore; om—sacred syllable om; iti—thus; udāhṛitya—by uttering; yajña—sacrifice; dāna—charity; tapaḥ—penance; kriyāḥ—performing; pravartante—begin; vidhāna-uktāḥ—according to the prescriptions of Vedic injunctions; satatam—always; brahma-vādinām—expounders of the Vedas