Break the source analogy into its components:
Original case: house.
New case: world.
Original judgment: being originated.
Unifying feature: composition (taʾlīf).
The key question is whether the house is originated *because* it is composite, or for another reason. If its judgment depends on something not established in the new case, the shared feature does not justify transfer.
This is why the text proceeds to methods for establishing the proposed cause.
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Analogy: Original and New Cases, Common Cause, Co-variation and Elimination
Break the source analogy into its components:
Original case: house.
New case: world.
Original judgment: being originated.
Unifying feature: composition (taʾlīf).
The key question is whether the house is originated *because* it is composite, or for another reason. If its judgment depends on something not established in the new case, the shared feature does not justify transfer.
This is why the text proceeds to methods for establishing the proposed cause.