2. A number of our people have narrated from Ahmad ibn abu ‘Abd Allah from Muhammad ibn Ali from Muhammad ibn al-Fudayl from ‘Abd al-Rahman ibn Zayd who has said the following
“Abu ‘Abd Allah (a.s.), has said that the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, has said, ‘The truffle is from Manna (honeydew, a kind of tree sap) which is from paradise and its water is cure for the eye.’”