Uthman called for water for ablution, then he performed wudu. He washed his hands three times, then rinsed his mouth and nose, then washed his face three times, then washed his right arm up to the elbow three times, then washed his left arm in the same way, then wiped his head, then washed his right foot up to the ankles three times, then washed his left foot in the same way.Then he said, "I saw the Messenger of Allah ﷺ perform wudu like this wudu of mine."Then he said, "The Messenger of Allah ﷺ said, 'Whoever performs wudu like this wudu of mine, then stands and prays two rakahs without letting his mind wander during them, his previous sins will be forgiven.'"
أخبرنا أحمد بن عمرو بن السرح والحارث بن مسكين قراءة عليه وأنا أسمع واللفظ له عن ابن وهب عن يونس عن ابن شهاب أن عطاء بن يزيد الليثي أخبره أن
أن عثمان دعا بوضوء فتوضأ فغسل كفيه ثلاث مرات ثم مضمض واستنشق ثم غسل وجهه ثلاث مرات ثم غسل يده اليمنى إلى المرفق ثلاث مرات ثم غسل يده اليسرى مثل ذلك ثم مسح برأسه ثم غسل رجله اليمنى إلى الكعبين ثلاث مرات ثم غسل رجله اليسرى مثل ذلك ثم قال رأيت رسول الله ﷺ توضأ نحو وضوئي هذا ثم قال قال رسول الله ﷺ من توضأ نحو وضوئي هذا ثم قام فركع ركعتين لا يحدث فيهما نفسه غفر له ما تقدم من ذنبه
Muslim narrated it in the Book of Purification, chapter on the description and completeness of wudu, hadith 226, from Ahmad bin Amr bin Sarh. Bukhari narrated it in the Book of Wudu, chapter on performing wudu three times each, hadith 159, from the hadith of Ibn Shihab Zuhri, through it.