Explaining the meaning of i'tikaf (spiritual retreat in the mosque) in the saying of Allah the Exalted: "And do not have sexual relations with them"

Question:
And we benefit from your knowledge. The saying of Allah the Exalted If you would be so kind as to explain this part of the verse, it would be more appropriate.

Answer:
Allah the Exalted has permitted intercourse during the nights of fasting, except for the one observing i'tikaf. I'tikaf is staying in a mosque where congregational prayer is held, staying in a mosque where congregational prayer is held for the sake of worship. This is i'tikaf, and it is a great act of worship. The Prophet (peace and blessings be upon him) used to observe i'tikaf in Ramadan; he used to observe it in the middle ten days. Then, when it became clear to him that the Night of Decree is in the last ten days, he moved his i'tikaf to the last ten days. He continued to observe it until Allah took him, in the last ten days. His wives and the Muslims after him also observed it. So i'tikaf is a great act of worship. Its original meaning is staying in a place and sitting in a place. Here, it means staying in the mosque where congregational prayer is held for the sake of worshipping Allah, remembering Him, dedicating oneself to that, and cutting oneself off from the affairs of this world, just as the Prophet (peace and blessings be upon him) used to do.
So the one observing i'tikaf is prohibited from intercourse during the nights of fasting for the duration of his i'tikaf. For this reason, it is said: and a child. The conditions for the validity of i'tikaf include abstaining from intercourse. If he has intercourse with his wife, his i'tikaf becomes invalid. Yes.