What is the ruling on denying the jinn's entry into the human body, and the possibility of intermarriage with them? And does that constitute apostasy that expels one from the faith, knowing that the Grand Imam Mahmoud Shaltout denies this and believes that the jinn's relationship with humans does not go beyond whispering and temptation?

The possession of a human by a jinn is established both by religious texts and by reality, according to the consensus of the Sunnis. As for those among the people of innovation, such as the Mu'tazilah and the Jahmiyyah, who disagree with this, they are not judged to be disbelievers; rather, they are considered to be mistaken and misguided for denying an established matter. Regarding the issue of intermarriage between humans and jinn, there is a difference of opinion among scholars regarding its possibility. The preponderant view is that it is possible, though it is considered forbidden or disliked.