Sunan Ibn Majah Book 1, Hadith 158
"The Messenger of Allah saw a man performing ablution, and he said: 'Do not be extravagant, do not be extravagant (in using water).'" (Maudu')
"I heard Ibn 'Abbas say: 'I stayed overnight with my maternal aunt Maimunah, and the Prophet got up and performed ablution from an old water skin, and he did a brief ablution. Then I got up and did the same as he had done."
The Messenger of Allah passed by Sa'd when he was performing ablution, and he said: 'What is this extravagance?' He said: 'Can there be any extravagance in ablution?' He said: 'Yes, even if you are on the bank of a flowing river.'"