Nazal bin Sabra reported,

I saw Ali pray Dhuhr, then sit to attend to people's needs. When the time for Asr arrived, a basin of water was brought to him. He took a handful and wiped his face, his forearms, his head, and his feet. Then he took what was left and drank it standing. He said, "Some people dislike this, but I saw the Messenger of Allah ﷺ do it. This is the ablution of one who has not broken his wudu."

أخبرنا عمرو بن يزيد قال حدثنا بهز بن أسد قال حدثنا شعبة عن عبد الملك بن ميسرة قال

سمعت النزال بن سبرة قال

رأيت عليا رضي الله عنه صلى الظهر ثم قعد لحوائج الناس فلما حضرت العصر أتي بتور من ماء فأخذ منه كفا فمسح به وجهه وذراعيه ورأسه ورجليه ثم أخذ فضله فشرب قائما وقال إن ناسا يكرهون هذا وقد رأيت رسول الله ﷺ يفعله وهذا وضوء من لم يحدث