Sunan an-Nasa'i 132
سنن النسائي#132SahihIt was narrated from Ibn 'Abbas that the Messenger of Allah (ﷺ) came out from the toilet and food was brought to him. They said:"Shall we not bring water for Wudu'?" He said: "I have only been commanded to perform Wudu' when I want to pray
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 1:133