Om Namo Bhagavate Vasudevaya

Om Namo Bhagavate Vāsudevāya (listen (help·info)) (Devanagari: ॐ नमो भगवते वासुदेवाय) lit. '"I bow to the Ultimate Reality, Vāsudeva"' is one of the most popular Hindu mantras, and according to the Bhagavata tradition, the most important mantra in Vaishnavism. It is called the Dvadasakshari Mantra, or simply Dvadasakshari, meaning the "twelve-syllable" mantra, dedicated to Vishnu and Krishna both. It has two traditions—Tantric and Puranic. In the Tantric tradition, the rishi of the mantra is Prajapati; in the Puranic tradition, the rishi is Narada. Both refer to it as the supreme Vishnu mantra.[citation needed] From Wikipedia