Wetting the hand and passing it over the limb is not regarded as washing it; rather it is essential either to dip the limb in water or let the water flow over it when washing it outside the vessel.

The jurists agreed that it is best to wipe the entire head, but they differed as to whether doing so is obligatory or not. The Malikis and Hanbalis are of the view that it is obligatory to wipe the entire head. The Hanafis and Shafi`is are of the view that it is sufficient to wipe part of the head.

The most correct opinion is that touching a woman does not invalidate Wudu at all whether it is with desire or without desire.

To properly wash the face during Wudu, you have to wash it from where the hair of the head grows to the end of the jawbones and the chin in length, and from ear to ear in width.

Rinsing the mouth and nose in Wudu is proven from the actions and words of the Prophet and they are included in washing the face. So if a person omits rinsing the mouth and nose when purifying himself, his purification is not valid, whether he did that deliberately or by mistake.