Meillet's analysis also "rectified earlier interpretations"[REF] that suggested that the Indo-Iranian common noun *mitra- had anything to do with the light or the sun.
Old Persian Mitra or Miθra - both only attested in a handful of 4th-century BCE inscriptions of Artaxerxes II and III - "is generally admitted [to be] a borrowing from the Avesta,"[REF] the genuine Old Persian form being reconstructed as *Miça.