I have heard the Messenger of Allah ﷺ say: Different evils will make their appearance in the near future. Anyone who tries to disrupt the affairs of this Umma while they are united you should strike him with the sword whoever he be. (If remonstrance does not prevail with him and he does not desist from his disruptive activities, he is to be killed.) (Using translation from Muslim 1852a)
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ إِنَّهُ سَتَكُونُ هَنَاتٌ وَهَنَاتٌ فَمَنْ أَرَادَ أَنْ يُفَرِّقَ أَمْرَ هَذِهِ الْأُمَّةَ وَهُمْ جَمِيعٌ فَاضْرِبُوهُ بِالسَّيْفِ كَائِنًا مَنْ كَانَ