Sunan an-Nasa'i 107
سنن النسائي#107SahihIt was narrated from Al-Mughirah that the Prophet (ﷺ) performed Wudu', and he wiped the forehead, the 'Imamah, and over the Khuff. (Another chain)
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 Muslim
In-book reference: 1:107