Jami` at-Tirmidhi 44
جامع الترمذي#44SahihAli narrated that:"The Prophet performed Wudu three times (for each limb)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 1:44