“So as for the Khawarij, the Ulama have explained that they are the ones who rebel against the True Imam, and they openly disobey him, and they conspire against him – so where is this True Imam today, with regards to whom we could label anyone who rebels against him as a “Khariji”? Where is the Ali ibn Abi Talib of today?And if we are Khawarij, then who are you (oh regimes and oh royal scholars)? Are you Ali and his companions?!
And did Ali take the laws of his governance from the legislation of the Persians and the Romans?! Did he govern according to “socialism” and “democracy”? Or was he a caller to “nationalism” and “social peace”? Or was Ali an ally and supporter of the Jews and Beijing? Or was Ali forsaking the Hudud of Allāh, and implementing punishments for which Allāh did not send down any permission? Or can it be said that Ali was possibly calling towards the establishment of the Khilafah, a crime which cannot be forgiven?! Or was Ali waging war against chastity and purity, calling for women’s “liberation” and for her to travel freely? Or was Ali one of those who have split the Qurʼan into parts? Those who say: “No Islam in politics, and no politics in Islam”?
And pardoned is Imam Ali – may Allāh dignify his face – he was not like that at all. Rather, he was of the most eager to implement the Judgments of Allāh, and governing with the Book of Allāh, and the Sunnah of His Messenger ﷺ. So no doubt, that the one who rebels against this Just Imam, he is truly a Khariji.
As for someone who perpetrates all of these falsehoods which we have just mentioned – then the one who rebels against such a ruler is not a Khariji; rather, he is a Muslim, a Mu’min, a Muttaqi.”
– Shaykh Umar Abd ar-Rahman