He said: The Jahmī then said, “Tell me how He rose over the Throne. Is it as when the Arabs say, ‘So-and-so settled upon the couch,’ meaning that the couch contained and bounded him when he was upon it? You would then have to say that the Throne contained and bounded Allah when He was upon it, for this is the only way we can conceive of one thing being upon another.”

A chapter further explaining this

He is to be told: As for your question, “How did He rise over it?”—“how” does not apply to Allah. He has informed us that He rose over the Throne, but He has not informed us how He did so. Believers must therefore believe their Lord concerning His rising over the Throne, and they are forbidden to describe how He rose over it, because He has not told them how that is. Nor have eyes seen Him in this world so that they might describe Him according to what they saw. They are forbidden to speak about Him without knowledge. Thus they believed His report concerning His rising over the Throne, then entrusted knowledge of how He rose over it to Allah.

But you, O Jahmī, must yourself say that Allah is bounded and that places have contained Him, since you claim that He is in places. For nothing can be conceived of as being in a place unless that place has