Are the Khawarij disbelievers?
Machine translationRead the Arabic original
The questioner : The apparent meaning of the text is only that they are declared disbelievers.
The Shaykh : It is the scholars who differ on this, but some said: As for the Khawarij who declare Muslims to be disbelievers and make their blood lawful, these are the ones. 'Ali ibn Abi Talib differed in his statement regarding them; at one time he said they are disbelievers, and at another time he said they are not disbelievers, but rather they are from the people of kufr (disbelief) in a lesser degree.
The questioner : O Shaykh, the Prophet's statement: "If I were to catch up with them, I would kill them as 'Ad was killed."
The Shaykh : Killing does not necessarily imply kufr (disbelief), because the rebellious group fights, and the aggressor against a person
The Shaykh : It is the scholars who differ on this, but some said: As for the Khawarij who declare Muslims to be disbelievers and make their blood lawful, these are the ones. 'Ali ibn Abi Talib differed in his statement regarding them; at one time he said they are disbelievers, and at another time he said they are not disbelievers, but rather they are from the people of kufr (disbelief) in a lesser degree.
The questioner : O Shaykh, the Prophet's statement: "If I were to catch up with them, I would kill them as 'Ad was killed."
The Shaykh : Killing does not necessarily imply kufr (disbelief), because the rebellious group fights, and the aggressor against a person
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 497- هل الخوارج كفار؟ - ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.