Om bhurbhuvah swah tatsaviturvarenyam bhargo devasya dhimahi dhiyo yo nah prachodayat.
In short it is a prayer to the Almighty Supreme
God, the Creator of entire cosmos, the essence of our life existence,
who removes all our pains and sufferings and grants happiness beseeching
His divine grace to imbibe within us His Divinity and Brilliance which
may purify us and guide our righteous wisdom on the right path.