Ibn Abdul-Rahman bin Abza reported,

It is reported from his father that a man came to Umar and said, "I became ritually impure and could not find water."Umar said, "Do not pray."Ammar bin Yasir said, "Commander of the Believers, do you not remember when you and I were on a military expedition and we both became ritually impure and could not find water? You did not pray, but I rolled in the dirt and prayed. When we came to the Prophet ﷺ and mentioned it to him, he said, 'It would have been enough for you to do this.' Then the Prophet ﷺ struck his hands against the ground, blew on them, and wiped his face and hands with them."Salama was uncertain whether the wiping was up to the elbows or only to the hands.Umar said, "We leave you to bear what you have taken upon yourself."

أخبرنا محمد بن بشار قال حدثنا محمد قال حدثنا شعبة عن سلمة عن ذر

عن ابن عبد الرحمن بن أبز

ى عن أبيه أن رجلا أتى عمر فقال إني أجنبت فلم أجد الماء قال عمر لا تصل فقال عمار بن ياسر يا أمير المؤمنين أما تذكر إذ أنا وأنت في سرية فأجنبنا فلم نجد الماء فأما أنت فلم تصل وأما أنا فتمعكت في التراب فصليت فأتينا النبي ﷺ فذكرنا ذلك له فقال إنما كان يكفيك فضرب النبي ﷺ يديه إلى الأرض ثم نفخ فيهما ثم مسح بهما وجهه وكفيه وسلمة شك لا يدري فيه إلى المرفقين أو إلى الكفين فقال عمر نوليك ما توليت