Is it permissible for a woman to observe Itikaf in the mosque in a designated area for her, and what is the duration of Itikaf if it is permissible?

It is permissible for a woman to perform I'tikaf in the mosque, and it is a Sunnah for both men and women. The best time for I'tikaf is the last ten days of Ramadan, following the example of the Prophet, peace and blessings be upon him. For one who is unable to perform I'tikaf for the entire ten days, it is permissible to perform it for as many days or nights as possible. I'tikaf is the act of staying in the mosque for the obedience of Allah, and no specific duration has been prescribed for it.