Musannaf Ibn Abi Shaybah

The father of Hazrat Ibn Abzi narrates that Hazrat Ammar said to Hazrat Umar, "Do you not remember the day when at such and such a time we became junub and did not find water, so we began to roll in the earth? When we presented ourselves before the Holy Prophet (peace and blessings be upon him) and related the whole matter, he (peace and blessings be upon him) said, 'It would have been sufficient for you to do this.' Saying this, the narrator A'mash struck his hands on the earth, then blew on them, then wiped them over his face and palms."