|Chapter 17||The Threefold Divisions of Material Existance||Verse 25|
Rudra Vaisnava Sampradaya:
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.
Brahma Vaisnava Sampradaya:
Sri Vaisnava Sampradaya:
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.
Kumara Vaisnava Sampradaya:
The auspiciousness of resonating TAT also as a name of the brahman or spiritual substratum pervading all existence which is a potency of Lord Krishna signifying that everything is under the complete control of the Supreme Lord. To perform prescribed Vedic activities without any desire for rewards is known as TAT. Such followers of the Vedic scriptures perform all activities for the Supreme Lord out of devotion or as a matter of duty with no expectation of anything in return. This is also known as TAT.