Sahih al-Bukhari 257
صحيح البخاري#257SahihNarrated Maimuna:I placed water for the bath of the Prophet. He washed his hands twice or thrice and then poured water on his left hand and washed his private parts. He rubbed his hands over the earth (and cleaned them), rinsed his mouth, washed his nose by putting water in it and blowing it out, washed his face and both forearms and then poured water over his body. Then he withdrew from that place and washed his feet
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: 5:10