Is it permissible to interact with someone who believes that "were it not for the Messenger, Allah's peace and blessings be upon him, neither sun nor moon nor Tablet nor Pen would have been created, and that people were created from his blessing, Allah's peace and blessings be upon him," as a Muslim, and is this statement considered polytheism?

The Prophet, peace and blessings be upon him, is the best of Allah's creation. Allah Almighty has praised him in His Book, and his superiority has been established in the authentic Sunnah. Many authentic Ahadith have been narrated indicating his superiority, such as Allah Almighty's saying: (And indeed, you are of a great moral character), and his (peace and blessings be upon him) saying: "I am the master of the children of Adam on the Day of Resurrection, and I say this without pride." It is not permissible to mention fabricated and false Ahadith except to expose their falsehood. Examples of these include: "Were it not for you, I would not have created the celestial spheres," and "Were it not for you, I would not have created Paradise, and were it not for you, I would not have created Hell." The common Muslims who narrate these Ahadith should be taught and alerted that they are fabricated, and it is not permissible to describe them as non-Muslims or polytheists.