Praise be to Allaah.
What is required
in wudoo’ is to wash the face with water, because Allah, may He be exalted,
says (interpretation of the meaning):
“O you who
believe! When you intend to offer As-Salat (the prayer), wash your faces and
your hands (forearms) up to the elbows…”
[al-Maa’idah
5:6].
Washing means
pouring water over the part of the body; just wiping it is not sufficient.
Al-Nawawi (may
Allah have mercy on him) said: It is stipulated when washing the parts of
the body that the water should flow over them; if the water touches but does
not flow, then his purification is not valid. Our companions are agreed on
this.
End quote from
Sharh al-Muhadhdhab, 1/491.
And he (may Allah
have mercy on him) said: The Muslims are unanimously agreed that the water
that is acceptable in wudoo’ and ghusl is not a specific amount; rather a
little or a lot may suffice if the condition of washing is met, which is
that the water should flow over the parts of the body.
End quote from
Sharh Saheeh Muslim, 2/20
Al-Bahooti (may
Allah have mercy on him) said: Proper washing means making the water reach
all of the part of the body being washed, so that it flows over it; it is
not sufficient just to wipe it.
End quote from
Daqaa’iq Ooli an-Nuha, 1/88
To sum up: in
order for wudoo’ to be valid, the water must flow over the part of the body
in question – apart from the head. But if the water does not flow on the
part of the body, and he merely transfers what is left on his hand of water,
then that is wiping, in which case his wudoo’ is not valid.
And Allah knows best.