Sunan Abi Dawud 894
سنن أبي داود#894SahihAbu sa’ld al-Khudri said:The mark of earth was seen on the forehead and nose of the Messenger of Allah (ﷺ) due to the prayer in which he led the people
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (813) Sahih Muslim (1167)
In-book reference: 2:504