According to her, dahm was not a (masculine plural) noun, but an (accusative singular feminine) adjective "used exclusively of Afriti among the divine beings."
As a divinity, Dahman only appears thrice in the surviving texts of the Avesta (once in Siroza 33, and once each in fragments P31 and P32) and once in a Zend translation of the lost Sudgar Nask.
Dahman continues to be invoked with Apam Napat (middle Persian: Burz Yazad) and Haoma (Hom) together with Anagra Raoca (Aneran), the divinity of the thirtieth day of the month.
In Zoroastrian cosmogony, Dahman was created though, and is associated with, the Amesha Spenta Shahrevar (Avestan: Kshathra [Vairya]), the guardian of metals and minerals.
(Boyce, 1993b) Unlike most other yazatas, Dahman is a purely Zoroastrian concept, with no pre-Zoroastrian equivalent, and was not inherited as an entity by later Persian mythology.