Sunan an-Nasa'i 74
سنن النسائي#74SahihIt was narrated from Shu'bah that Habib said:"I heard 'Abbad bin Tamim narrate from my grandmother - who was Umm 'Umarah bint Ka'b - that the Prophet (ﷺ) performed Wudu', and he was brought a vessel in which there were two-thirds of a Mudd." Shu'bah said: "I remember that he washed his forearms and started rubbing them, and he wiped the inside of his ear, but I do not remember whether he wiped the outside of them
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 ZaiIsnaad Sahih
In-book reference: 1:74