What is the ruling on one who refrains from stating that the soul is created—whether the soul of Adam (peace be upon him) or the soul of any human—and instead says: "The soul is from the command of Allah, and I do not say whether it is created or uncreated"? And does he become an apostate definitively?

The belief of Muslims is that the soul is created, and the messengers have unanimously agreed upon this. It is a matter known by necessity from their religion.

Whoever hesitates regarding the soul being created may commit disbelief, because that opens the door to claiming its pre-eternity.

The Almighty's saying: "And they ask you, [O Muhammad], about the soul. Say, 'The soul is of the affair of my Lord.'" (Quran 17:85) means that the soul is from what Allah has commanded, not that it is uncreated.

The statement that the soul is ancient and uncreated, whether from philosophers or some Sufis, is an act of disbelief because it makes it a part of Allah's essence or eternally pre-existent, and this contradicts the fact that Allah is the Creator and everything else besides Him is created.