It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that during the blessed era of the Noble Prophet (peace and blessings be upon him), we had nothing to eat except two black things: dates and water.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9911
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن