Yazid bin Abi Malik and Abu al-Azhar narrate that Sayyiduna Mu'awiyah (may Allah be pleased with him) showed them the ablution (wudu) of the Messenger of Allah (peace and blessings be upon him): he performed the ablution washing each part three times, except for washing his feet, which he washed without counting.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16938