Harih, Om! May Mitra be propitious to us, and Varuna, Aryaman also, Indra, Brihaspati, and the wide-striding Vishnu. Adoration to Brahman! Adoration to thee, O Vayu (air)! Thou indeed art the visible Brahman. I shall proclaim thee alone as the visible Brahman. I shall proclaim the right. I shall proclaim the true (scil. Brahman). May it protect me! May it protect the teacher! yes, may it protect me, and may it protect the teacher! Om! Peace! peace! peace!
In plain words: This is an opening prayer asking many gods, such as Mitra, Varuna, Indra and Vishnu, to be kind. It honors Vayu, the wind, as the visible form of Brahman, and asks that both student and teacher be protected, ending with a wish for peace.