وهو القياس بعلة مستنبطة بالرأي والاجتهاد ظاهراً
This is analogy based on an effective cause inferred through qualified reasoning and ijtihad.
Without an explicit statement of the cause, a jurist seeks a suitable attribute connected to the law's relevant purpose and established principles.
A plausible benefit is not automatically a legally recognized cause. Its evidentiary basis, compatibility with other proofs and presence in the new case require examination. This reasoning often operates through a preponderance of probability.