FARDH (COMPULSORY) ACTS OF WUDHU
There are four fardh acts in wudhu:-
To wash the entire face once.
To wash both hands up to and including the elbows once.
To make masah of one-quarter of the head once.
To wash both feet up to and including the ankles once.
These are the fardh acts of wudhu. Even if one of these acts is left out, or even if a place equal to a hair’s breadth is left dry, wudhu will not be complete.