Arshtat (arštāt) is the Avestan language name of a Zoroastrian principle and signifies either "justice" or "honesty." As a substantive, arshtat designates the divinity Arshtat, the hypostasis of "Rectitude" and "Justice". Her standing epithet is "world-furthering" or "world-promoting."
Read more about Arshtat: In Scripture, In Tradition