It is narrated from Hazrat Aisha (may Allah be pleased with her) that when the Prophet (peace and blessings be upon him) intended to observe i'tikaf, he would enter the place of i'tikaf only after offering the morning prayer. Once, the Prophet (peace and blessings be upon him) mentioned his intention to observe i'tikaf in the last ten days of Ramadan, so Hazrat Aisha (may Allah be pleased with her) asked him for permission to observe i'tikaf. The Prophet (peace and blessings be upon him) granted her permission, so Hazrat Aisha (may Allah be pleased with her) ordered her tent to be set up, and it was set up. At the order of Hazrat Hafsa (may Allah be pleased with her), her tent was also set up. Seeing this, Hazrat Zainab (may Allah be pleased with her) also ordered her tent to be set up. When the Prophet (peace and blessings be upon him) saw many tents in the mosque that day, he said, "Do you seek to attain virtue by this?" I am not observing i'tikaf." So the Prophet (peace and blessings be upon him) returned and after Eid, he observed i'tikaf for ten days in Shawwal.