WUDU‘ AND WASHING THREE TIMES
Q. what about wudhu under a running tap. Many people just wash their body parts but not three times. Is this wudhu valiod [sic.]?
The wudu’ will be valid. However, it is sunna to wash the required body parts three times and one may NOT perform wudu’ by habitually leaving this sunna. In Imam al-Zayla`i’s commentary of Imam al-Nasafi’s Kanz al-Daqa’iq it states regarding the sunna aspects of wudu’:
“…(and washing three times) because [the Prophet] – upon him be blessings and peace – performed wudu’ washing three times saying ‘this is my wudu’ and that of the Prophets before me’…”
…( وَتَثْلِيثُ الْغَسْلِ) لِأَنَّهُ صلى الله عليه وسلم تَوَضَّأَ ثَلَاثًا ثَلَاثًا وقال هذا وُضُوئِي وَوُضُوءُ الْأَنْبِيَاءِ من قَبْلِي…
And Allah knows best.
 See al-Zayla`i, Tabyin al-Haqa’iq Sharh Kanz al-Daqa’iq, vol.1, p.4. Bracketed text in bold is that of Imam al-Nasafi’s matn Kanz al-Daqa’iq (p.6).