Place for a spiritual retreat (6)
(Other definitions for ash that I've seen before include ". . . . [FOREST] One of which" , "What's left after burning" , "Variety of tree" , "Tree with keys" , "What's often left after something 1 Ac" .)
(Other definitions for ashram that I've seen before include "Indian religious retreat" , "Hindu place of religious learning located in a marsh" , "religious community" , "Hindu place of retreat" , "Retreat -- a marsh (anag)" .)