īhu
For someone (agent muɴ-; s agent maN-) to apply water with or without soap (theme i-) to the face, arms, hands, feet, legs, grime, dirt (loc ref -an) in washing the extremities.
For someone (agent) to use a particular choice of water, soap (inst paN-) for washing the extremities.
For soap, water (actor -um- & theme) to wash the arms, face, feet, hands, legs (loc ref).