Al-A'mash said: A man from Banu Asad defecated on the grave of Husayn bin Ali (may Allah be pleased with him). (The narrator) said: Then the people of that household were afflicted with mental derangement, insanity, leprosy, sickness and poverty.
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2847