It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: Whoever intends evil against the people of Madinah, Allah will melt him as salt melts in water.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 8687
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن، م: 1386