The Book of I'tikaf

Ibn `Umar (May Allah be pleased with them) reported::

The Messenger of Allah (ﷺ) used to observe I`tikaf in the last ten days of Ramadan. .

'Aishah (May Allah be pleased with her) reported::

The Prophet (ﷺ) used to engage himself in I'tikaf (seclusion for prayers) in the mosque during the last ten nights of Ramadan till he passed away; thereafter, his wives followed this practice after him..

Abu Hurairah (May Allah be pleased with him) reported::

The Prophet (ﷺ) used to observe I'tikaf every year (during Ramadan) for ten days; in the year in which he passed away, he observed I'tikaf for twenty days..