It is narrated from Hazrat Aisha that once the Prophet (peace be upon him) mentioned his intention to observe i'tikaf in the last ten days of Ramadan. Hazrat Aisha asked him for permission to observe i'tikaf, and the Prophet (peace be upon him) granted her permission. So Hazrat Aisha ordered her tent to be set up, and it was set up. Seeing this, Hazrat Hafsa said to Hazrat Aisha (may Allah be pleased with her) to seek permission from the Prophet (peace be upon him) for her as well. She obtained permission, and upon Hazrat Hafsa's instruction, her tent was also set up. Seeing this, Hazrat Zainab also ordered her tent to be set up. Since the Prophet (peace be upon him) would return after offering prayer, that day when he saw many tents in the mosque, he asked, "What is this?" People informed him that these are the tents of Hazrat Aisha, Hafsa, and Zainab. The Prophet (peace be upon him) said, "Do you seek righteousness by this?" I am not observing i'tikaf." So the Prophet (peace be upon him) returned, and after Eid, he observed i'tikaf for ten days in Shawwal.