I’tekaf means to seclude oneself in a mosque with the express intention (niyyah) for the remembrance of Allah. I’tekaf in Ramadan is a recommended act of worship which has manifold virtues and benefits.
The mere fact that the Messenger of Allah always performed it is sufficient to explain the virtues that are attached to it. In every moment of I’tikaf one remains in lbadah (worship), even when asleep, one is still in His service, striving for nearness to Him.
It is also deduced from the various narrations that one of the major objects of I’tikaf during Ramadan is to search for Laylatul Qadr (the Night of Power).
No doubt,the reward of I’tekaf is vast.