In The Name of Allaah, The Most Merciful, The Bestower of Mercy.

Al-Allaamah Rabee Bin Haadi Al-Madkhalee [may Allaah preserve him] said:

By Allaah! Islaam and the [affairs of the] Muslims are not ruined except by these categories of [people] amongst the people of bidah and misguidance-the khawaarij and those similar to them, and those who are worse, such as the rawaafid [i.e. Shiites of Iran and those upon their beliefs]. The rawaafid are worse than the khawaarij, and Ikhwaan al-Muslimoon (i.e. the sect -the Muslim brotherhood in Egypt and elsewhere) ally with them and they say: “They (rawaafid) are our brothers; the differing between us and them is like the differing between (Imaam) Maalik and (Imaam) Shaafi’ee;” meaning: The differing between us (i.e. Ikhwaan Muslimoon) and them (i.e. rawaafid shiites) is based on ijtihaad, and if Imaam (Maalik) and (Imaam) Shafee’ee differ in (some) affairs, they are all rewarded; and if we (ikhwaan al-muslimoon) differ with the rawaafid shiites, then us and them are rewarded.

O deceivers! [i.e. Ikhwaanis] The rawaafid (shiites) revile the Sahaabah and declare them disbelievers; they revile the wives of the Messenger (sallal-laahu-alayhi-wasallaam); they say that the Qur’aan is distorted; they (rawaafid) have shir’kiyyaat (beliefs and acts of major polytheism) and they deify the leaders of the Prophet’s family. So does all of this not harm them (i.e. harm their claim to Islaam); is this not irjaa?! (i.e. O Ikhwaanis! Is this alliance of yours with the rawaafid and that the differing between you and them is like the differing between Imaams Maalik and Shaafi’ee not Ir’jaa?!) [[An Excerpt from: لذريعة إلى بيان مقاصد كتاب الشريعة للإمام المحدث أبي بكر محمد بن الحسين الآجري   pages: Page: 162-slightly paraphrased]

Al-Allaamah 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 no one 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 no one 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 no one 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. Paraphrased… listen to audio on this link: https://salaficentre.com/2016/02/reminder-ahlul-ahwaa-i-e-the-people-of-bidah-are-the-ones-who-start-the-wars/

Also read on this link at http://www.ikhwanis.com/index.cfm

The Sab’iyyah, Raafidah and Khaarijiyyah: Historical and Contemporary Interplay Between Rafd and Khaarijiyyah: http://www.ikhwanis.com/articles/fqfejnx-the-sabiyyah-raafidah-and-khaarijiyyah.cfm

Shaikh Shamsuddeen Al-Afghaanee [rahimahullaah] said: Ahlul Bidah are the ones who kindle trials and disorder.  They are a chaotic people and are deprived of safety and security.  They are a people of trials and disturbance as opposed to Ahlul Hadeeth Was-Sunan (i.e. those who steadfastly follow the ahaadeeth of the Prophet and his Sunnah). Have they (i.e. the people of Sunnah) committed what the people of bidah and trials have committed?! The people of bidah trespass- alongside enmity and innovation- whilst Ahlus Sunnah respond and defend (the religion). [Source: عداء الماتريدية للعقيدة السلفية 1/26-27]