´Abu Hurairah narrated:` "The Prophet performed Wudu two time (for each limb)."
Shaykh Dr. Abdur Rahman Freywai
1: Both Hammam ibn Yahya and Amir al-Ahwal used to become confused, so it is possible that in this narration, one of them became confused and narrated "three" instead of "two." However, from Abu Hurairah (radi Allahu anhu), there is a similar narration in Ibn Majah (no. 415) through another (weak) chain.
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 43