Sahih al-Bukhari · Hadith 340

Rubbing hands and feet with dust (Tayammum)
340

Narrated `Abdur Rahman bin Abza: that while he was in the company of `Umar, `Ammar said to `Umar, "We were in a detachment and became Junub and I blew the dust off my hands (performed the rolling over the earth and prayed)