Sahih al-Bukhari 191
صحيح البخاري#191SahihNarrated `Amr bin Yahya:(on the authority of his father) `Abdullah bin Zaid poured water on his hands from a utensil containing water and washed them and then with one handful of water he rinsed his mouth and cleaned his nose by putting water in it and then blowing it out. He repeated it thrice. He, then, washed his hands and forearms up to the elbows twice and passed wet hands over his head, both forwards and backwards, and washed his feet up to the ankles and said, "This is the ablution of Allah's Messenger (ﷺ)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 4:57