ॐ महास्वनाय विद्महे
अनादिनिधनाय धीमहि
तन्नो विष्णुः प्रचोदयात्
Om Mahasvanaya Vidmahe
Anadinidhanaya Dhimahi
Tanno Vishnuh Prachodayat
Om, may we know Him whose voice is the primordial Vedic sound,
And meditate deeply upon Him who is without beginning or end;
May Lord Vishnu illuminate our intellect.