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) camped at the place of Awlat al-Jaish in the last part of the night, and with him was his wife Sayyida Aisha (may Allah be pleased with her). Her necklace of pearls from Dhafar was lost, and the people were detained to search for this necklace. Meanwhile, dawn was breaking and the people did not have any water. So Allah Almighty revealed the concession of purification with pure earth. Thus, the Muslims stood with the Messenger of Allah (peace and blessings be upon him) and struck their hands on the earth, then raised them, and did not take any soil with their hands at all. Then they wiped them over their faces, and with the outer part of their hands up to the shoulders, and with the inner part up to the armpits, they also wiped those parts with their hands. But people should not be deceived by this condition, and it has reached us that Sayyiduna Abu Bakr (may Allah be pleased with him) said to Sayyida Aisha (may Allah be pleased with her): By Allah! What I have understood is that you are very blessed.