Sahih Bukhari
Ablutions (Wudu)
Volume: 001 / Book Number: 004 / Hadith Number: 188
Narrated Ibn Shihab:
Mahmud bin Ar-Rabi' who was the person on whose face the Prophet had ejected a mouthful of water from his family's well while he was a boy, and 'Urwa (on the authority of Al-Miswar and others) who testified each other, said, "Whenever the Prophet , performed ablution, his companions were nearly fighting for the remains of the water."