And Muhammad ibn Abd al-A'la narrated to me, saying: al-Mu'tamir narrated to us, saying: 'Umarah ibn Ghaziyyah al-Ansari narrated to us, saying: I heard Muhammad ibn Ibrahim narrating from Abu Salamah, from Abu Sa'id al-Khudri — may Allah be pleased with him — who said: The Messenger of Allah, peace and blessings be upon him, observed i'tikaf during the first ten days of Ramadan, then he observed i'tikaf during the middle ten days in a Turkish tent, at whose entrance there was a mat. He said: He took the mat in his hand and moved it aside to a corner of the tent, then he put out his head and spoke to the people, and they drew near to him. He said: "Indeed, I observed i'tikaf during the first ten days seeking this night, then I observed i'tikaf during the middle ten days. Then I was visited and it was said to me that it is in the last ten days. So whoever among you wishes to observe i'tikaf, let him observe i'tikaf." So the people observed i'tikaf with him. He said: "And I was shown it to be an odd-numbered night, and that I would prostrate on the morning after it in mud and water." Then the morning of the twenty-first night came, and he had stood for the dawn prayer, and the sky rained, and the mosque leaked, and I saw the mud and water. Then he came out after finishing the dawn prayer, with his forehead and the tip of his nose covered in mud and water. And indeed, it was the night of the twenty-first of the last ten days.