Narrated Sa`id bin `Abdur Rahman bin Abza: (on the authority of his father who said) `Ammar said so (the above Statement). And Shu`ba stroked lightly the earth with his hands and brought them close to his mouth (blew off the dust) and passed them over his face and then the backs of his hands. `Ammar said, "Ablution (meaning Tayammum here) is sufficient for a Muslim if water is not available."

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.)"

Narrated `Abdur Rahman bin Abza: `Ammar said to `Umar "I rolled myself in the dust and came to the Prophet who said, 'Passing dusted hands over the face and the backs of the hands is sufficient for you.' "

Narrated `Ammar: As above.

Narrated `Ammar: The Prophet stroked the earth with his hands and then passed them over his face and the backs of his hands (while demonstrating Tayammum).