Is washing the forearms while massaging the arms considered sufficient for the obligatory washing of them after washing the face, especially with the use of a large amount of water during that?

If someone washes their hands at the beginning of wudu with the intention of it being obligatory, but does not wash them again with the forearms, there is a difference of opinion regarding the validity of their wudu. However, if a person strongly believes that the water covered their hands when washing their forearms, then this is sufficient; because for performing wudu completely, a strong belief is enough.