حَدَّثَنَا مَحْمُودُ بْنُ خَالِدٍ، حَدَّثَنَا الْوَلِيدُ، بِهَذَا الإِسْنَادِ قَالَ فَتَوَضَّأَ ثَلاَثًا ثَلاَثًا وَغَسَلَ رِجْلَيْهِ بِغَيْرِ عَدَدٍ ‏.‏

Another version says: He performed each part of the ablution three times and washed his feet times without number. Translation Not Available

Book Ref: Sunan Abi Dawud Book 1 Hadith 125
Web Ref:  Sunan Abi Dawud Book 1 Hadith 125