Q. Is it necessary to wet one’s hand afresh for masah of the head or the wetness already existing will suffice? This was the answer in Taleemul Islam: A. It is better to take fresh water, but if the hand is wet after washing, masah is allowed with it. It is not allowed to do masah with the hand with which masah has already been done. Masah will not be allowed with the hand that was dry, but was moistened by any other part, on which masah had been done or was washed. [Ta’leem-ul-Islam]
As said above masah will not be allowed with the hand with which masah has already be done. I want to know while washing the hands we rub the hands up to elbow, thereafter, make the masah with the wetted hands without taking fresh water. Will rubbing hands be counted as masah or moistening by other part and hence will it nullify wudu ?
A: The rubbing of the arms up to the elbows while washing them is not regarded as masah. That is washing and you are allowed to make masah of the head with hands that are wet after washing. Wudhu will be valid if you made masah of the head with the wet hands after washing the arms
And Allah Ta’ala knows best
Mufti Siraj Desai