It is narrated from Hazrat Jabir (may Allah be pleased with him) and Abu Saeed Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Mushroom is a part of "manna" and its water is a cure for the eyes, and Ajwa is a date from Paradise and it also provides cure from poison.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11453
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد ضعيف لاضطرابه وضعف شهر بن حوشب