“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).’”
عَنِ النَّبِيِّ ﷺ أَنَّ الْكَمْأَةُ مِنَ الْمَنِّ الَّذِي أَنْزَلَ اللَّهُ عَلَى بَنِي إِسْرَائِيلَ وَمَاؤُهَا شِفَاءٌ لِلْعَيْنِ