Sunan Abi Dawud

Sunan Abi Dawud 125

The Manner of The Prophet's Wudu'
Purification (Kitab Al-Taharah) Search within the hadiths
Sunan Abi Dawud 125
Arabic hadith text
حَدَّثَنَا مَحْمُودُ بْنُ خَالِدٍ، حَدَّثَنَا الْوَلِيدُ، بِهَذَا الإِسْنَادِ قَالَ فَتَوَضَّأَ ثَلاَثًا ثَلاَثًا وَغَسَلَ رِجْلَيْهِ بِغَيْرِ عَدَدٍ
Translation
Another version says

He performed each part of the ablution three times and washed his feet times without number.