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It is remarkable that his discussion and that of others like him revolve, in this matter, around bodies being alike in nature. Yet he has mentioned the disagreement over this question, explaining that the speculative theologians who maintain that bodies are alike base their position on bodies being composed of indivisible substances, and on those substances being alike.

Then, when discussing whether substances are alike, he stated that there is no proof that they are. Thus, the foundation of their reasoning, on which all these matters depend, amounts to speaking without knowledge—indeed, contrary to the truth—even though it concerns Allah Most High.

Allah Most High says:

“Say, ‘My Lord has only forbidden immoralities—whether committed openly or secretly—sin, unjust aggression, associating with Allah that for which He has sent down no authority, and saying about Allah what you do not know.’”
Al-A‘rāf 33.

And Allah Most High says concerning Satan:

“He only commands you to commit evil and immorality, and to say about Allah what you do not know.”
Al-Baqarah 169.

[Al-Āmidī’s discussion of substances being homogeneous but not identical]

In this large work of his, he said:

“Chapter Four: Substances Are Homogeneous but Not Identical.

The Ash‘arīs and most of the Mu‘tazilah agree that substances are alike and homogeneous, while al-Nazzām and al-Najjār of the Mu‘tazilah held, on the basis of their view