It is the view of most scholars that to touch one's private parts, skin to skin, invalidates ablution. Their view is based on the Hadith by a companion of the Prophet, Yassrah bint Safwan, who stated that she has heard the Prophet saying: "He who touches his private parts must not pray until he has performed ablution". (Related by Al-Bukhari, Muslim, Malik, Al-Shafie, Ahmad as well as others). Another Hadith related by Ahmad quotes the Prophet as saying: "Any man who touches his private parts should perform ablution and any woman who touches her private parts should have ablution." In the light of these Hadiths, if you touch your private parts, when you are drying yourself after having had grand ablution, you need to perform ablution, i.e. Wudhu, before you pray.Note: The Shafiis and Hanbalis say that the ablution is invalidated by as uch as touch regardless of its being with the palm of one's hqand or the back of the hand. The Malikis are said to differentiate between touching with the palm- in which case the ablution is invalidated= and touching with the back of the hand- in which case it remanis intact. The Hanafi school does not regard that as invalidating the ablution. (Source: Arab News) Classified in Ablution > Invalidated by touching private parts