"Shall we not bring water for Wudu'?" He said: "I have only been commanded to perform Wudu' when I want to pray."
Sunan an-Nasa'i Book 1, Hadith 133
← Previous Hadith "The Messenger of Allah (ﷺ) was brought a small vessel (of water) and he performed Wudu'." I said: "Did the Messenger of Allah (ﷺ) perform Wudu' for every prayer?" He said: "Yes." He said: "What about you?" He said: "We used to pray all the prayers so long as we did not commit Hadath." He said: "And we used to pray all the prayers with (one) Wudu'."

Sunan an-Nasa'i Book 1, Hadith 132 Next Hadith → "The Messenger of Allah (ﷺ) used to perform Wudu' for every prayer. One the day of the Conquest (of Makkah), he offered all the prayers with one Wudu'. 'Umar said to him: 'You have done something that you never did before.' He said: 'I did that deliberately, O 'Umar.'"

Sunan an-Nasa'i Book 1, Hadith 134