Hadith 31-241

وَبِإِسْنادِهِ قالَ: قالَ عَلِيِ‏ عَلَيْهِ السَّلامُ: أُمِرتُ بِقِتالِ النّاكِثينَ وَالقاسِطينَ وَالمارِقِينَ.

According to the same documentation, Ali (a.s.) said, “I have been appointed to kill the those who breach their covenants (nakitheen), the hypocrites (qasiteen), and the Kharajites (mariqeen).