The above mentioned procedure was the Sunnat method. Certain acts are compulsory in Wudhu. If even one is left out or has some deficiency, then Wudhu will not be complete. In Wudhu, there are only four Faraaidh (compulsory acts).
1. To wash the entire face once
2. To wash both hands including the elbows once
3. To make Masah of a quarter of the head once.
4. To wash both feet once upto and including the ankles.
By doing so much, the Wudhu will be completed. However, by performing Wudhu according to the Sunnat method, one’s Wudhu will be perfected and more reward will be attained.