Musnad Ahmad 1050
It was narrated that Abu Hayyah said:
I saw ‘Ali urinate in ar-Rahbah. (Then) he called for water and did wudoo’. He washed his hands three times, rinsed his mouth and nose three times, washed his face three times, washed his forearms three times each, wiped his head and washed his feet three times each. Then he stood up and drank from the leftover water, then he said: I saw the Messenger of Allah (ﷺ) do what you have seen me do, and I wanted to show it to you.
حَدَّثَنَا وَكِيعٌ، عَنْ إِسْرَائِيلَ، وَعَبْدُ الرَّزَّاقِ، أَنْبَأَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي حَيَّةَ الْوَادِعِيِّ، قَالَ عَبْدُ الرَّزَّاقِ عَنْ أَبِي حَيَّةَ، قَالَ رَأَيْتُ عَلِيًّا بَالَ فِي الرَّحَبَةِ وَدَعَا بِمَاءٍ فَتَوَضَّأَ فَغَسَلَ كَفَّيْهِ ثَلَاثًا وَمَضْمَضَ وَاسْتَنْشَقَ ثَلَاثًا وَغَسَلَ وَجْهَهُ ثَلَاثًا وَغَسَلَ ذِرَاعَيْهِ ثَلَاثًا ثَلَاثًا وَمَسَحَ بِرَأْسِهِ وَغَسَلَ قَدَمَيْهِ ثَلَاثًا ثَلَاثًا ثُمَّ قَامَ فَشَرِبَ مِنْ فَضْلِ وَضُوئِهِ ثُمَّ قَالَ إِنِّي رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَعَلَ كَالَّذِي رَأَيْتُمُونِي فَعَلْتُ فَأَرَدْتُ أَنْ أُرِيَكُمُوهُ‏.‏