It wasnarrated from Abu Sa`eed and Jabir that the Messenger of Allah(ﷺ) said:
"Truffles are a type of manna, and their water is ahealing for eye (diseases). And the `Ajwah* are from Paradise, andthey are healing for possession."**Another chain from Abu Sa`eed from the Prophet (ﷺ) with similar wording. (ID)
English reference (ID): Vol. 4, Book 31, Hadith 3453 (ID)
Arabic reference (ID): Book 31, Hadith 3579 (ID)