Case: Three reports are treated as equally authoritative: a prophetic miracle, a saintly karāmah and a fortune-teller claiming reliable access to hidden events.
Evidence of prophethood and saintly miracles belong to different categories. News from a kāhin or ʿarrāf—especially a claim to certain, independent unseen knowledge through spirits or stars—does not become revelation. Allah’s knowledge of the unseen is not comparable to limited creaturely information.
An extraordinary appearance does not itself make a claim true or religiously authoritative. Consider the source of the claim, what authority it asserts and whether it accords with revealed guidance.