Ashavan

Avestan ashavan (ašavan) is a Zoroastrian theological term. It literally means "possessing aša", hence "possessing truth" or "possessing righteousness", but has further implications:

The linguistic cognate of Avestan ašavan is Vedic ŗtáavan, which, however, has some functional differences vis-à-vis the Zoroastrian term:

That the souls of the dead dwell in the radiant quarters of Truth (Yasna 16.7) has a Vedic parallel in which the seat of truth is located in the other world.

...
Wikipedia