GoKirtan, Robert de Hope, SUNIDHI AL RADHA
Hari Om Tat Sat
Mantra
ॐ तत्सदिति निर्देशो ब्रह्मणस्त्रिविधः स्मृतः ।
oṁ tat sad iti nirdeśo brahmaṇas tri-vidhaḥ smṛtaḥ
"From the beginning of creation, the three words om tat sat were used to indicate the Supreme Absolute Truth" (Bhagavad-gita 17.23).
Meaning
"Om tat sat" are the three words by which the Vedas indicate the Absolute Truth; "Hari" at the beginning is a name of the Lord. In his purport Srila Prabhupada explains that austerity, sacrifice and charity are conditioned by the modes of nature, but become means of spiritual progress when dedicated to the Supreme — om tat sat, the Supreme Personality of Godhead.