Terrorist groups like ISIS, Al Qaida, Boko Haram show superstitious hadiths as evidence for the violence they inflict. These false hadiths must be removed from Islamic sources. Superstitions like those that say those who shave their beard, who don't pray and who drink alcohol must be killed are not in line with Islam and must be removed from Islamic texture. Without doing this, it's impossible to end radical terror. - Harun Yahya