It was narrated from Ubayy bin Ka'b that:
The Messenger of Allah called for water and performed ablution once.
He said: "This is the minimum requirement of ablution' or he said:
'The ablution of one who, if he does not perform this ablution, Allah
will not accept his prayer." Then he performed ablution washing each
part twice, and he said: 'This is the ablution of one who, if he
performs it, Allah will give him two shares of reward." Then he
performed ablution washing each part three times, and said: 'This is
my ablution and the ablution of the Messengers who were sent before
Ibn Abbas narrated:
"The Prophet performed Wudu one time (for each limb)."
Abu Hurairah narrated:
"The Prophet performed Wudu two time (for each limb)."
Ali narrated that:
"The Prophet performed Wudu three times (for each limb)."
Means 1 time, 2 time and 3 time all are sunnah, but you want the triple reward then wash 3 times (from first hadith) and this is my WUDU and all the messengers before me, it's enough to use the 3 time one.
You already studied the quranic ayah in your question link, so no need to explain that part.