قمه زنی توسط مراجع شیعه حرام اعلام شده است (English)

Tatbir (blood ritual, self-flagellation with knives or chains) is a fabricated tradition. It is among the issues that does NOT belong to the religion and undoubtedly Allah is NOT pleased with such practice... *Do NOT Practice it.* _(Ayatollah Khamenei)_
more details: http://clean-the-glasses.blogspot.com/2014/11/fatawa-on-tatbir-blood-ritual-in-ashura.html