It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The mushroom is also a part of "manna" (which was sent down upon the Children of Israel), and its water is a cure for the eyes. And the Ajwa date is a date from Paradise, and its water is a cure for poison.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10335
Hadith Gradingحکم دارالسلام:حديث حسن، وهذا إسناد ضعيف لضعف شهر