Hadith 266
It is narrated from Sayyiduna Ammar bin Yasir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said regarding tayammum: "One strike is for the face and both hands."
Hadith 267
Sayyiduna Ammar bin Yasir (may Allah be pleased with him) narrates from the Messenger of Allah (peace be upon him) regarding tayammum that he (peace be upon him) said: "For the face and hands, there is only one strike." (One should strike the earth with the hands only once.)