Qutaybah ibn Sa'id narrated to us, Bakr—who is Ibn Mudar—narrated to us, from Ibn al-Had, from Muhammad ibn Ibrahim, from Abu Salamah ibn 'Abd al-Rahman, from Abu Sa'id al-Khudri, may Allah be pleased with him, who said: The Messenger of Allah, peace and blessings be upon him, used to observe i'tikaf in the ten days in the middle of the month. Then, when twenty nights had passed and the twenty-first was approaching, he would return to his dwelling, and those who were observing i'tikaf with him would also return. Then, in one month in which he observed i'tikaf, he remained through that night on which he used to return, and he addressed the people, commanding them with whatever Allah willed. Then he said: "I used to observe i'tikaf during these ten days, but then it occurred to me to observe i'tikaf during these last ten days. So whoever has been observing i'tikaf with me, let him stay in his place of i'tikaf. And I have seen this night, but then I was made to forget it, so seek it in the last ten nights, on every odd night. And I saw myself prostrating in water and mud."

Abu Sa'id al-Khudri said: We were rained upon on the night of the twenty-first, and the mosque leaked at the place where the Messenger of Allah, peace and blessings be upon him, prayed. I looked at him as he finished the dawn prayer, and his face was wet with mud and water.