Despite the meaning of her name "with solid horses," Drvaspa does not appear in any context referring to horses, and is instead invoked in the company of Geush Tashan and Geush Urvan, respectively representing the body and soul of cattle.
The 33 verses of Yasht 9, the hymn to Drvaspa, are-appropriately adjusted-copies of verses 27-52 of Yasht 17, which is dedicated to Ashi.