The term OM is uttered while acts of sacrifice, gift and austerity are undertaken by the followers of higher life. To cherish in our minds the divine awareness and the absolute supremacy of the Infinite, as expressed in OM, is to add purpose and meaning to all our acts of sacrifice, charity and austerity. To invoke in our minds the divine concept of the Absolute is to free our personality from its limited fields of ego-centric attachments. When a mind is thus liberated from its limitations, it becomes more efficient in all austerities, more selfless in all Yajnas, and more liberal in all charities.

WHEN IS “TAT” USED?

Tasmat, therefore; yajna-dana-tapah, kriyah, acts of sacrifice, charity and austerity-acts in the form of sacrifice etc.; vidhana-uktah, as prescribed through injunctions, as ordained by the scriptures; brahma-vadinam, of those who study and expound the Vedas; satatam, always; pravartante, commence; udahrtya, after uttering; om iti, the syllable Om.