Musnad Ahmad 487
It was narrated that Busr bin Sa`eed said:
`Uthman (رضي الله عنه) came to al-Maqa`id and called for water for wudoo`. He rinsed his mouth and nose, then he washed his face three times, then he washed his hands three times each, then he wiped his head and (washed) his feet three times each. Then he said: I saw the Messenger of Allah (ﷺ) doing wudoo` like this, O people, isn`t that true? They said: Yes - i.e., a group of the Companions of the Messenger of Allah (ﷺ)  who were with him.
حَدَّثَنَا ابْنُ الْأَشْجَعِيِّ، حَدَّثَنَا أَبِي، عَنْ سُفْيَانَ، عَنْ سَالِمٍ أَبِي النَّضْرِ، عَنْ بُسْرِ بْنِ سَعِيدٍ، قَالَ أَتَى عُثْمَانُ الْمَقَاعِدَ فَدَعَا بِوَضُوءٍ فَتَمَضْمَضَ وَاسْتَنْشَقَ ثُمَّ غَسَلَ وَجْهَهُ ثَلَاثًا وَيَدَيْهِ ثَلَاثًا ثَلَاثًا ثُمَّ مَسَحَ بِرَأْسِهِ وَرِجْلَيْهِ ثَلَاثًا ثَلَاثًا ثُمَّ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ هَكَذَا يَتَوَضَّأُ يَا هَؤُلَاءِ أَكَذَاكَ قَالُوا نَعَمْ لِنَفَرٍ مِنْ أَصْحَابِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عِنْدَهُ‏.‏