Jami` at-Tirmidhi 58
جامع الترمذي#58Da'ifAnas narrated that :"The Prophet would perform wudu for every Salat, whether he was in state of purity or not in a state of purity
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 1:58