"I saw Ali performing Wudu. He washed his hands until he cleaned them, then he rinsed out his mouth three times, sniffed water into his nose and blew it out three times, washed his face three times, and his forearms three times. He wiped his head once, then he washed his feet up to the ankles. Then he stood up, taking what was left over from his purification (water) and drank it while he was standing. Then he said, 'I wanted to show you how Messenger of Allah purified himself.'"  

رَأَيْتُ عَلِيًّا تَوَضَّأَ فَغَسَلَ كَفَّيْهِ حَتَّى أَنْقَاهُمَا ثُمَّ مَضْمَضَ ثَلاَثًا وَاسْتَنْشَقَ ثَلاَثًا وَغَسَلَ وَجْهَهُ ثَلاَثًا وَذِرَاعَيْهِ ثَلاَثًا وَمَسَحَ بِرَأْسِهِ مَرَّةً ثُمَّ غَسَلَ قَدَمَيْهِ إِلَى الْكَعْبَيْنِ ثُمَّ قَامَ فَأَخَذَ فَضْلَ طَهُورِهِ فَشَرِبَهُ وَهُوَ قَائِمٌ ثُمَّ قَالَ أَحْبَبْتُ أَنْ أُرِيَكُمْ كَيْفَ كَانَ طُهُورُ رَسُولِ اللَّهِ ﷺ  

from Ali (no. 48). Except that Abd Khair's version includes the following additions: "When he was finished from his purification, he would take what was left over from his purification with his hand to drink it."  

عَنْ عَلِيٍّ مِثْلَ حَدِيثِ أَبِي حَيَّةَ إِلاَّ أَنَّ عَبْدَ خَيْرٍ قَالَ كَانَ إِذَا فَرَغَ مِنْ طُهُورِهِ أَخَذَ مِنْ فَضْلِ طَهُورِهِ بِكَفِّهِ فَشَرِبَهُ