Hatm bin Isma'il al-Madni حاتم بن إسماعيل المدني · Chapters on Medicine

“I heard Sa’eed bin Zaid bin ‘Amr bin Nufail narrating from the Prophet (ﷺ) that: ‘Truffles are a type of manna that Allah sent down to the Children of Israel, and their water is a healing for eye (diseases).’”