Krsna Dvaipayana Vyasa has written this song “Om Sam No Mitrah Sam”. The official name of this song is Chapter 1 Verse 1; Guru Mantra. This song is taken from the book Taittiriya Upanisad. This prayer is sung to invoke peace before performing any auspicious activity.
om sam no mitrah sam varunah
sam no bhavatvaryama
sam no indro brhaspati
sam no visnu rurukramah
namo brahmane namas te vayo
tvam eva pratyaksam brahmasi
tvam eva pratyaksam brahma vadisyami
rtam vadisyami satyam vadisyami
tan mam avatu tad vaktaram avatu
avatu mam avatu vaktaram
om santi santi santih
Om, may Mitra be propitious to us. May Varuna bless us. May the blessings of Aryama be with us. May the Grace of Indra and Brihaspati be upon us. May Vishnu, the All-pervading ("wide-striding") be propitious to us. Salutations to Brahman. Salutations to Thee, O Vayu! Thou art the visible Brahman. Thee alone shall I consider as the visible Brahman. I shall declare: – Thou art the "right." Thou art the "Good." May That protect me; May That protect the speaker. Please protect me. Please protect the speaker. Om Peace Peace Peace.