A topic dealt with in the book The Evolution Deceit, chapter “The Real Essence of Matter” as well as in the books Matter: The Other Name for Illusion; Idealism, The Philosophy of the Matrix and the True Nature of Matter, Eternity Has Already Begun; Timelessness and the Reality of Fate and Knowing the Truth has been criticized by some people. Having misunderstood the essence of the subject, these people claim that what is explained as the secret beyond matter is identical to the teaching of Wahdatul Wujood.
Let us state, before all else, that the author of this book is a believer strictly abiding by the doctrine of Ahlus Sunnah and does not defend the view of Wahdatul Wujood.

However, it should also be remembered that Wahdatul Wujood was defended by some leading Islamic scholars including Muhyiddin Ibn ‘Arabi. It is true that numerous significant Islamic scholars who described the concept of Wahdatul Wujood in the past did so by considering some subjects found in these books. Still, what is explained in these books is not the same as Wahdatul Wujood.

Some of those who defended the view of Wahdatul Wujood were engrossed by some erroneous opinions and made some claims contrary to the Qur’an and the doctrine of Ahlus Sunnah. They, for example, completely rejected the creation of Allah. When the subject of the secret beyond matter is told, however, there is definitely no such claim. This section explains that all beings are created by Allah, and that the originals of these beings are seen by Him whereas people merely see the images of these beings formed in their brains.

Mountains, plains, flowers, people, seas—briefly everything we see and everything that Allah informs us in the Qur’an that exists and that He created out of nothing is created and does indeed exist. However, people cannot see, feel or hear the real nature of these beings through their sense organs. What they see and feel are only the copies that appear in their brains. This is a scientific fact taught at all schools primarily in medicine. The same applies to the article you are reading now; you can not see nor touch the real nature of it. The light coming from the original article is converted by some cells in your eyes into electrical signals, which are then conveyed to the sight center in the back of your brain. This is where the view of this article is created. In other words, you are not reading an article which is before your eyes through your eyes; in fact, this article is created in the sight center in the back of your brain. The article you are reading right now is a “copy of the article” within your brain. The original article is seen by Allah.

In conclusion, the fact that the matter is an illusion formed in our brains does not “reject” the matter, but provides us information about the real nature of the matter: that no person can have connection with its original.

This fact is told in the book Idealism, The Philosophy of the Matrix, and the True Nature of Matter as follows:

THERE IS MATTER OUTSIDE OF US, BUT WE CANNOT REACH IT

… [S]aying that matter is an illusion does not mean it does not exist. Quiet the contrary: whether we perceive the physical world or not, it does exist. But we see it as a copy in our brain or, in other words, as an interpretation of our senses. For us, therefore, the physical world of matter is an illusion.

The matter outside is seen not just by us, but by other beings too. The angels Allah delegated to be watchers witness this world as well:

And the two recording angels are recording, sitting on the right and on the left. He does not utter a single word, without a watcher by him, pen in hand! (Qur'an, 50: 17-18)

Most importantly, Allah sees everything. He created this world with all its details and sees it in all its states. As He informs us in the Qur'an:

… Heed Allah and know that Allah sees what you do. (Qur'an, 2: 233)

Say: "Allah is a sufficient witness between me and you. He is certainly aware of and sees His servants." (Qur'an, 17: 96)

It must not be forgotten that Allah keeps the records of everything in the book called Lawh Mahfuz (Preserved Tablet). Even if we don't see all things, they are in the Lawh Mahfuz. Allah reveals that He keeps everything's record in the "Mother of the Book" called Lawh Mahfuz with the following verses:

It is in the Source Book with Us, high-exalted, full of wisdom. (Qur'an, 43: 4)

… We possess an all-preserving Book. (Qur'an, 50: 4)

Certainly there is no hidden thing in either heaven or Earth which is not in a Clear Book. (Qur'an, 27: 75)