Bulugh al-Maram 129

Narrated `Ammar bin Yasir (RAA):

The Prophet (ﷺ) sent me on some errands and I became junub (sexually impure), and could not find water. I rolled myself in the dirt just as an animal does. I then came to the Prophet (ﷺ) and mentioned that to him. He said, "This would have been enough for you," and he struck the earth with his hands once, then he wiped the right hand with the left one, and the outside of the palms of his hands and his face. [Agreed upon. The wording is that of Muslim's].