Shaykh Saalih Al-Fawzaan said, “We say: Fitnah (tribulation) lies in leaving alone the people of evil (i.e. the people of bidah) spreading their evil without them being taken by their hands (restrained) and without their evil being warned against and their ideas being refuted. This is the actual fitnah.
As for clarification (and) taking the fools by their hands, (by fools we mean) the people of misguidance (the people of bidah), this is wisdom and is not fitnah (tribulation), this is repelling error.”
Posted by Abdul Kareem Ibn Ozzie