ˈɪndɪk mˈɪtɹə ɪz fˈɜːst ɐtˈɛstᵻd ɪn ɐ fˈoːɹtiːnθ sˈɛntʃɚɹi bˌiːsˌiːˈiː mˈɪtæni ɪnskɹˈɪpʃən ɪnwˌɪtʃ ɐn ˈɪndoʊˈɑːɹɹɪən kˈɪŋ ʌv mˈɪtæni ɪnvˈoʊks ðə ɡˈɑːdz mˈɪtɹə, ˈɪndɹə, vɑːɹɹˈuːnə, ænd ðə nˈæsɐɾɪəz æz ɡˈæɹɐntˌoːɹz ʌv hɪz swˈoːɹn ˌɑːblɪɡˈeɪʃənz.
Indic Mitra is first attested in a 14th century BCE Mitanni inscription in which an Indo-Aryan king of Mitanni invokes the gods Mitra, Indra, Varuna, and the Nasatyas as guarantors of his sworn obligations.