In The Name of Allaah, The Most Merciful, The Bestower of Mercy
Shaikh Saaleh Al-Fawzaan (may Allaah preserve him) stated:
The wars that take place between the Muslims and the splitting are only brought about by the people of desires, such as the Khawaarij, the Mutazilah and other than them! The people of desires are the ones who cause the fitnah—the Mutazilah, the khawaarij, the Rawaafid (Shiites) and other than them. Fitnah does not occur except from them and as a result of them. Who murdered Uthmaan (radiyallaahu-anhu)? Who murdered Ali (radiyallaahu-anahu)? Who were the ones that ignited the fitnah between the Muslims thereafter? It was none else other than those people of desires. Who misled Al-Mamoon and those rulers who came after him to put Ahlus Sunnah to trial, until their Imaam Ahmad Bin Hanbal (rahimahullaah) was beaten and imprisoned? It was none else other than the people of desires. Who brought about the imprisonment of Shaikhul Islaam Ibn Taymiyyah (rahimahullaah) until he died in prison? It was none else other than those people of desires! It is upon us to be cautious of these people because the end result of their fitnah leads to the splitting of the unity of the Muslims, rebellion against the Muslim rulers and splitting the Jamaa-ah of the Muslims, so that they become divergent groups and parties, which is the opposite of being one united Ummah.
Abridged and paraphrased… listen to audio here: