Sunan an-Nasa'i 428
سنن النسائي#428SahihIt was narrated that Maimunah, the wife of the Prophet (ﷺ), said:"The Prophet (ﷺ) performed Ghusl from Janabah; he washed his private part then rubbed his hand on the ground or the wall, then he performed Wudu' as for prayer, then he poured water over his head and the rest of his body
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: 4:33