Farr, Farrah, Xwarrah or Xwarnah is heavenly power that has given to human to perform their functions. Rulers, priests and heroes have special Farrah. They are victorious when they have divine Farrah. They have defeated when this heavenly power escape them.

Farvardin yašt, the longest yašt is allocated to Faravahar. Avesta’s Farvahar is equivalent to pahlavi’s faravašī. Farvardin is rooted from this word. Faravaši is formed from farr that means ahead and it’s root is vaš or vaxš that means to increase. This article names Iranian rulers and heroes that have farr to show value of this heavenly gift.