For someone (agent) to towel himself, the body (loc ref) with a face cloth or towel (theme i-).
panuwalya; manuwalya
Alam han tuwalya' ta ituwalyam an umuy mun'amoh.
Get my towel with which to towel (yourself) in going to take a bath.
Refers to either washing the body with a face cloth or drying off with a towel.