The Islamic prophet's foreknowledge of the Terfeziaceae's health benefits

[LostLocke]

Reported authentic hadiths like the one above are cumulative evidence of his message being divinely inspired.

So, the only way to learn that truffles help eye infections is if god tells someone. So that means the scientists who wrote those papers must also have been told by god.
If you say, "No, the scientists learned about this by doing it.", then it would stand to reason that at some point in the past (not really all that long ago if the hadith date is to be believed) someone else learned by doing it also.
The hadith wasn't a prediction of the future, but the recording of a discover, albeit with an unnecessary supernatural twist.