Fardh is an action which is needed for worship like washing face in Wudhu is a Fardh. If the face is not washed then the Wudhu is not valid.<br /> <br /> There are four Fardh in Wudhu.<br /> <br /> 1. Washing the face<br /> <br /> 2. Washing both hands up till the elbow<br /> <br /> 3. Performing Masah of the head (i.e. wiping over the head)<br /> <br /> 4. Washing both feet up to the ankles<br />