Abdur Rahman bin Abzi narrates: A man came to Sayyiduna Umar bin Khattab (may Allah be pleased with him) and said: I have become junub (in a state of major ritual impurity), and I did not find water. So Sayyiduna Umar (may Allah be pleased with him) said: Do not perform the prayer. Then Sayyiduna Ammar said: O Commander of the Faithful, do you not remember this matter? You and I were in a battle and we both became junub and did not find water. You did not perform the prayer, but I rolled myself in the earth and performed the prayer. We then came to the service of the Prophet (peace and blessings be upon him) and I mentioned this to him. The Prophet (peace and blessings be upon him) said: It would have been sufficient for you to do this. Then the Prophet (peace and blessings be upon him) struck his blessed hand on the earth, blew on it, and wiped both hands over his face and arms.