عَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «الْمَعِدَةُ حَوْضُ الْبَدَنِ وَالْعُرُوقُ إِلَيْهَا وَارِدَةٌ فَإِذَا صَحَّتِ الْمَعِدَةُ صَدَرَتِ الْعُرُوقُ بِالصِّحَّةِ وَإِذَا فَسَدَتِ الْمَعِدَةُ صَدَرَتِ الْعُرُوقُ بِالسقمِ»

Abu Huraira told that when some of the companions of God's messenger remarked to him that truffles are the smallpox of the earth he replied

“Truffles are a kind of manna, and their juice is a remedy for the evil eye. The 'ajwa dates come from paradise, and they are a remedy for poison.” Abu Huraira said that he took three, five, or seven truffles, pressed them, put their juice in a bottle and applied it as an eye-lotion to a slavegirl of his who was blear-eyed, and she recovered. Tirmidhi transmitted it, saying this is a hasan tradition.