The Islamic version of the "No true Scotsman" fallacy.
Erdoğan at the opening of the latest mosque in Cambridge:
A Muslim cannot be a terrorist and Islam does not produce terrorists, the Turkish president said on Dec. 5, once again rejecting the term "Islamic terrorism".
But.... but.... the prophet himself said "I have been made victorious by terror". (Then again I guess, strictly speaking he was not at that stage a Muslim).