Musnad Ahmad 1046, 1047
It was narrated that Abu Hayyah said:
I saw ‘Ali (رضي الله عنه) doing wudoo`. He washed his hands until they were clean, then he rinsed his mouth three times, then he rinsed his nose three times; he washed his face three times and his forearms three times; he wiped his head and washed his feet up to the ankles. And he took the leftover water and drank it whilst standing. Then he said: I wanted to show you how the Messenger of Allah   (ﷺ) did wudoo`


‘Abd Khair narrated a hadeeth like that of Abu Hayyah from `Ali, except that ’Abd Khair said: When he finished his wudoo’, he took some of the leftover water in his hand and drank it.
حَدَّثَنَا عَبْد اللَّهِ، حَدَّثَنَا خَلَفُ بْنُ هِشَامٍ الْبَزَّارُ، حَدَّثَنَا أَبُو الْأَحْوَصِ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي حَيَّةَ، قَالَ رَأَيْتُ عَلِيًّا رَضِيَ اللَّهُ عَنْهُ يَتَوَضَّأُ فَغَسَلَ كَفَّيْهِ حَتَّى أَنْقَاهُمَا ثُمَّ مَضْمَضَ ثَلَاثًا ثُمَّ اسْتَنْشَقَ ثَلَاثًا وَغَسَلَ وَجْهَهُ ثَلَاثًا وَذِرَاعَيْهِ ثَلَاثًا وَمَسَحَ بِرَأْسِهِ وَغَسَلَ قَدَمَيْهِ إِلَى الْكَعْبَيْنِ وَأَخَذَ فَضْلَ طَهُورِهِ فَشَرِبَ وَهُوَ قَائِمٌ ثُمَّ قَالَ أَحْبَبْتُ أَنْ أُرِيَكُمْ كَيْفَ كَانَ طُهُورُ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ.
حَدَّثَنَا عَبْد اللَّهِ حَدَّثَنَا خَلَفُ بْنُ هِشَامٍ الْبَزَّارُ حَدَّثَنَا أَبُو الْأَحْوَصِ عَنْ أَبِي إِسْحَاقَ قَالَ وَذَكَرَ عَبْدُ خَيْرٍ عَنْ عَلِيٍّ مِثْلَ حَدِيثِ أَبِي حَيَّةَ إِلَّا أَنَّ عَبْدَ خَيْرٍ قَالَ كَانَ إِذَا فَرَغَ مِنْ طُهُورِهِ أَخَذَ بِكَفَّيْهِ مِنْ فَضْلِ طَهُورِهِ فَشَرِبَ‏.‏