Sunan an-Nasa'i 146
سنن النسائي#146SahihUthman said:"I heard the Messenger of Allah (ﷺ) say: 'There is no man who performs Wudu' and does it well, then prays, but when he prays it, he will be forgiven whatever (sins he commits) between that and the next prayer
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 1:147