A distinctive material fallacy arises when the meanings, read in one way, yield true statements but not a well-formed syllogism. Rearranging the same expressions into syllogistic form then makes a premise false.
إذا رتب المعاني فيه على وجه يكون صادقاً لم يكن قياساً
When the meanings are arranged in a truthful way, they do not form a syllogism.
The problem is not merely that a false premise leads to an error. It is the mistaken attempt to obtain both true premises and a shared middle term by quietly changing how a qualification is understood.