From Sahih Muslim (Hadith 619):
Anas b. Malik reported:The Messenger of Allah (ﷺ) entered an enclosure while a servant was following him with a jar of water and he was the youngest amongst us and he placed it by the side of a lote-tree. When the Messenger of Allah, (ﷺ) relieved himself, he came out and had cleansed himself with water
Reference: Muslim 619