Musnad Ahmad 30:985

Yahya ibn Adam and Ishaq ibn Isa narrated to us—the meaning is the same, and the wording is the wording of Yahya ibn Adam—they said: Sharik narrated to us, from Ibrahim ibn Jarir, from Abu Zur'ah ibn 'Amr ibn Jarir, from Abu Hurairah, who said: "The Messenger of Allah (ﷺ) entered the privy, so I brought him a vessel containing water, and he performed istinja (cleaned himself). Then he wiped his hand on the ground, then washed it. Then I brought him another vessel, and he performed wudu with it."