Vohu Manah
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The term is a compound of the words ''vohu'' "good" and ''manah'' "mind, thought, purpose", cognate with the Vedic words ''vásu'' and ''mánas'', both with the same meaning. Both of these derive from Proto-Indo-Iranian ''*Hwásuš'' and ''*mánas'', in turn from Proto-Indo-European ''*h₁wésus'' and ''*ménos''.
In the Gathas, the oldest texts of the Avesta and considered to be composed by Zoroaster, the term 'Vohu Manah' is not unambiguously used as a proper name and frequently occurs without the "Good" (''Vohu-'') prefix.
In the post-Gathic texts that expound the principles of Zoroastrian cosmogony, Vohu Manah is an Amesha Spenta, one of seven emanations of Ahura Mazda that each represent one facet of creation. In the case of Vohu Manah, this is all animal creation, with a particular stress on cattle. Vohu Manah is of neutral gender in Avestan grammar but in Zoroastrian tradition is considered masculine.
In the Zoroastrian calendar, the second day of each month as well as the eleventh month of each year are dedicated to Vohu Manah. In the Iranian civil calendar, which inherits the names of the months from the Zoroastrian calendar, the 11th month is likewise named Bahman.
The Achaemenid emperor Artaxerxes II (as it is rendered in Greek) had "Vohu Manah" as the second part of his throne name, which when "translated" into Greek appeared as "Mnemon". New Persian ''Bahman'' remains a theophoric in present-day Iranian and Zoroastrian tradition. Provided by Wikipedia