Is Ibn Taymiyyah's statement: "And if its existence in eternity were possible, there would be no objection to it, thus the negation of the consequent is void," meant to imply that there is no objection to the possibility of space existing in eternity? And is my understanding correct that Ibn Taymiyyah meant that assuming the possibility of space existing in eternity leads to a false consequent, which is the existence of something eternal alongside God, and therefore he emphasizes that space is a non-existent entity?

Ibn Taymiyyah, may Allah have mercy on him, meant that the existence of spatial dimensions (ahyāz) in eternity does not necessitate the existence of self-subsisting, eternal entities alongside Allah. Ar-Razi argued against Allah's elevation (uluw) by claiming it would require the existence of spatial dimensions alongside Allah in eternity. Ibn Taymiyyah refuted this by stating that a spatial dimension is a non-existent entity; thus, it does not imply the existence of anything alongside Allah. Even if its existence were assumed, it would be contingent and not self-subsisting. He emphasized that Muslims do not accept the notion of self-subsisting entities existing alongside Allah in eternity, and that existing spatial dimensions are created by Allah. Ibn Taymiyyah's doctrine prevents an infinite regress of events in specific entities (a'yān) but permits it in categories (anwā'), and this does not necessitate the eternity of the world, for every individual entity is preceded by non-existence and by the Creator.