Sunan an-Nasa'i 342
سنن النسائي#342SahihIt was narrated that Ibn 'Umar said:"Men and women used to perform Wudu' together during the time of the Messenger of Allah (ﷺ)
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
In-book reference: 2:18