BG 17.25

Acts of sacrifice, austerity, and charity, performed without thought of reward, are performed after uttering "Tat".

तदित्यनभिसन्धाय फलं यज्ञतपःक्रियाः
दानक्रियाश्च विविधाः क्रियन्ते मोक्षकाङ्क्षि

tad — the syllable Tat
ity — thus
anabhisandhāya — without desiring
phalaṁ — fruitive rewards
yajña-tapaḥ-kriyāḥ — acts of sacrifice and austerity
- yajña — sacrifice
- tapaḥ — austerity
- kriyāḥ — acts, performances
dāna-kriyāśh — acts of charity
- dāna — charity
- kriyāśh — acts, performances
cha — and
vividhāḥ — various
kriyante — are done
mokṣha-kāṅkṣhibhiḥ — by seekers of freedom from material entanglements
- mokṣha — liberation
- kāṅkṣhibhiḥ

"Om Tat Sat" is the threefold designation of Brahman, by which the scriptures, ceremonies, and sacrifices have been ordained.

[23]

The scriptures prescribed that all acts of sacrifice, gifts, and austerities commence with the utterance of "Om".

[24]

Acts of sacrifice, austerity, and charity, performed without thought of reward, are performed after uttering "Tat".

[25]

The word "Sat" refers to the existence of that which is good. As such, it is used to refer to an auspicious action.

[26]

Devotion to sacrifice, austerity, and charity is also referred to as "Sat", as is any action for such purposes.

[27]

Acts of sacrifice, charity, or penance, when performed without faith, are called "Asat". Such acts have no significance in this world and the next.

[28]

Summary