I was in the company of Allah's Apostle on one of the journeys and he went out to answer the call of nature (and after he finished) I poured water and he performed ablution; he washed his face, forearms and passed his wet hand over his head and over the two Khuff, (leather socks).
— Sahih Bukhari, Volume 1, Book 4: Ablutions (Wudu'), Hadith #182
