It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Truffles are (a kind) of manna, and their water is a cure for the eye."
And the Messenger of Allah (peace and blessings be upon him) prescribed the fat tail of a ram for sciatica (pain of the hip nerve).
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12428