Yahya related to me from Malik from Nafi that Abdullah ibn Umarand he were approaching Juruf. When they got to Mirbad, Abdullah gotdown and did tayammum with some good earth. He wiped his face, and hisarms to the elbows, and then prayed.
USC-MSA web (English) reference: Book 2, Hadith 92
Arabic reference: Book 2, Hadith 122