The four principal modes present an unreal cause in an assertive or explanatory form. A closely related mode does not firmly assert the cause but suggests it as a possibility or uncertainty.
When the speaker says, in effect, “perhaps the clouds wept for this reason,” the imaginative causal relation remains, but its assertive force changes. Such wording may be treated as akin to ḥusn al-taʿlīl without collapsing it into the four principal cases.
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The Dialectical Method and Elegant Causal Attribution: Proof and Four Modes of Ḥusn al-Taʿlīl
The four principal modes present an unreal cause in an assertive or explanatory form. A closely related mode does not firmly assert the cause but suggests it as a possibility or uncertainty.
When the speaker says, in effect, “perhaps the clouds wept for this reason,” the imaginative causal relation remains, but its assertive force changes. Such wording may be treated as akin to ḥusn al-taʿlīl without collapsing it into the four principal cases.