3. Rubbing the head
Wiping of the head means to wipe a wet finger of the right hand from the crown of the head to the hair-line. Wiping of the head can be performed on any part of the quarter of the head which is over the fore-head.
The act of wiping can be done with one finger only, but it is recommended to use three fingers together. The water must reach the root of the hair. However, if the hair are so short that they cannot be combed then it is enough to wipe the hair.
While wiping the head, your hand should not touch your fore-head; otherwise, the water of the fore-head will mix with the wetness of your hand, and this will render the act of wiping the right foot invalid. Why? Because the act of wiping must be done with the wetness of the hands only.