Bhagavad Gita Chapter 17 Verse 25
भगवद् गीता अध्याय 17 श्लोक 25

तदित्यनभिसन्धाय फलं यज्ञतपःक्रियाः।
दानक्रियाश्च विविधाः क्रियन्ते मोक्षकाङ्क्षि।।17.25।।



हिंदी अनुवाद - स्वामी रामसुख दास जी ( भगवद् गीता 17.25)
।।17.25।।तत् नामसे कहे जानेवाले परमात्माके लिये ही सब कुछ है -- ऐसा मानकर मुक्ति चाहनेवाले मनुष्योंद्वारा फलकी इच्छासे रहित होकर अनेक प्रकारकी यज्ञ और तपरूप क्रियाएँ तथा दानरूप क्रियाएँ की जाती हैं।


English Translation of Sanskrit Commentary By Sri Shankaracharya's
17.25 After uttering the word tat, which is a name of Brahman, yajna-tapah-kriyah, acts of sacrifice and austerity; ca, as also; vividhah, the various; dana-kriyah, acts of charity, such as gift of land, gold, etc.; kriyante, are performed; anabhisandhaya, without regard for; phalam, results of actions; moksa-kanksibhih, by persons aspiring for Liberation.
The use of the words Om and tat has been stated. Thereafter, the use of the word sat is bieng presently stated:


English Translation of Commentary  - Dr. S. Sankaranarayan
17.25 See Comment under 17.27


English Translation of Ramanuja's Sanskrit Commentary
17.25 Whatever acts such as the study of the Vedas, sacrifices, austerities and gifts are done without aiming at results by those of the first three stations, seeking only final release - these are designated by the term Tat referring to the brahman, since they constitute the means for attainment of brahman. For it is well known that the term Tat signifies brahman, as in the following passage:  He is Sah,Vah, Kah, Kim, Yat, Tat, Padam, Anuttamam. (M.B., 13.254.91). Thus, the study of the Vedas, sacrifices etc., which are the means of attaining release, have been stated; the connection of Tat has been spoken of since the word Tat signifies them (i.e., the study of Vedas etc.). The connection of the term Tat with the three stations is shown because of their practising the study of the Vedas etc., in the way stated.

In order to show how the term Sat is connected with these, Sri Krsna shows the etymology of the term Sat, as it is prevalent in the world:


Transliteration Bhagavad Gita 17.25Tadityanabhisandhaaya phalam yajnatapah kriyaah;
Daanakriyaashcha vividhaah kriyante mokshakaangkshibhih.


Word Meanings Bhagavad Gita 17.25tat—the syllable Tat; iti—thus; anabhisandhāya—without desiring; phalam—fruitive rewards; yajña—sacrifice; tapaḥ—austerity; kriyāḥ—acts; dāna—charity; kriyāḥ—acts; cha—and; vividhāḥ—various; kriyante—are done; mokṣha-kāṅkṣhibhiḥ—by seekers of freedom from material entanglements