Narrated Anas bin Malik: saw
Allah’s Apostle when the ‘Asr prayer was due and the people searched for water
to perform ablution but they could not find it. Later on (a pot full of) water
for ablution was brought to Allah’s Apostle. He put his hand in that pot and
ordered the people to perform ablution from it. I saw the water springing out
from underneath his fingers till all of them performed the ablution (it was one
of the miracles of the Prophet).
Sahih Al-Bukhari – Book 4 Hadith
170