The Book of Drinks
36/28. Chapter:
The virtue of truffles, and treating the eyes with them
Sahih Muslim
وَحَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنْ عَبْدِ الْمَلِكِ بْنِ، عُمَيْرٍ قَالَ سَمِعْتُ عَمْرَو بْنَ حُرَيْثٍ، قَالَ سَمِعْتُ سَعِيدَ بْنَ زَيْدٍ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " الْكَمْأَةُ مِنَ الْمَنِّ وَمَاؤُهَا شِفَاءٌ لِلْعَيْنِ " .
Through another chain of transmitters, Sa'id b. Zaid b. 'Amr reported: I heard Allah's Apostle (ﷺ) as saying: Truffles are a kind of 'Manna' and their juice is a medicine for the eyes.
Reference : Sahih Muslim 2049bIn-book reference : Book 36, Hadith 217USC-MSA web (English) reference : Book 23, Hadith 5084