तदित्यनभिसन्धाय फलं यज्ञतपःक्रियाः।
दानक्रियाश्च विविधाः क्रियन्ते मोक्षकाङ्क्षि।।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।
Now Lord Krishna glorifies the auspicious sound vibration TAT. The performance of yagna or propitiation, tapah or austerities and danam or charity by the pure minded aspirants in sattva guna the mode of goodness are performed without any desire for rewards. Therefore the recitation of TAT is auspicious because through the purification of the mind and the subsequent renunciation of desire for recompense one becomes motivated for spiritual goals such as moksa or liberation from material existence, atma tattva or realisation of the immortal soul and communion with the Supreme Lord.
Whatever prescribed Vedic activities performed by the Vaisnavas and brahmanas such as study of the Vedic scriptures and yagna or propitiation and worship by ritual to the Supreme Lord, tapah or austerities by the ksatriyas or royal warrior class and danam or charity by the vaisyas or merchant class are all done out of devotion and dedicated to the Supreme Lord Krishna or any of His authorised incarnations and expansions as revealed in Vedic scriptures without the slightest desire for material rewards. Such activities devoid of motivation for mundane results are designated as TAT signifying that such acts are for atma tattva or realisation of the immortal soul, perception of the brahman or spiritual substratum pervading all existence and attaining communion with the Supreme Lord. The Vishnu Sahasrasa confirms that: sah, vah, kah, klim, and tat denote the Supreme absolute. Hence the ontology of TAT has been demonstrated to signify its connection to transcendental and eternal activities which independently bestow moksa or freedom from material existence and promotion to the eternal spiritual realms.
Whatever prescribed Vedic activities performed by the Vaisnavas and brahmanas such as study of the Vedic scriptures and yagna or propitiation and worship by ritual to the Supreme Lord, tapah or austerities by the ksatriyas or royal warrior class and danam or charity by the vaisyas or merchant class are all done out of devotion and dedicated to the Supreme Lord Krishna or any of His authorised incarnations and expansions as revealed in Vedic scriptures without the slightest desire for material rewards. Such activities devoid of motivation for mundane results are designated as TAT signifying that such acts are for atma tattva or realisation of the immortal soul, perception of the brahman or spiritual substratum pervading all existence and attaining communion with the Supreme Lord. The Vishnu Sahasrasa confirms that: sah, vah, kah, klim, and tat denote the Supreme absolute. Hence the ontology of TAT has been demonstrated to signify its connection to transcendental and eternal activities which independently bestow moksa or freedom from material existence and promotion to the eternal spiritual realms.