Abu Dawud Book 1, Hadith Number 128.

Chapter : A man who puts his hands in the utensil before washing it.

Narated By Al-Rubayyi’ daughter of Mu’awwidh b. ‘Afra’ : The Messenger of Allah (PBUH) performed ablution in her presence. He wiped the whole of his head from its upper to the lower part moving every side. He did not move the hair from their original position.