Purification (Kitab Al-Taharah)
Dawud :: Book 1 : Hadith 233
Narrated AbuBakrah:
The Apostle of Allah (peace_be_upon_him) began to lead (the people) in the dawn prayer. He then signalled with his hand: (Stay) at your places. (Then he entered his home). He then returned while drops of water were coming down from him (from his body) and he led them in prayer.