The Prophet ﷺ said: Three things are the roots of faith: to refrain from (killing) a person who utters, "There is no god but Allah" and not to declare him unbeliever whatever sin he commits, and not to excommunicate him from Islam for his any action; and jihad will be performed continuously since the day Allah sent me as a prophet until the day the last member of my community will fight with the Dajjal (Antichrist). The tyranny of any tyrant and the justice of any just (ruler) will not invalidate it. One must have faith in Divine decree.  

قَالَ رَسُولُ اللَّهِ ﷺ ثَلاَثَةٌ مِنْ أَصْلِ الإِيمَانِ الْكَفُّ عَمَّنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ وَلاَ تُكَفِّرْهُ بِذَنْبٍ وَلاَ تُخْرِجْهُ مِنَ الإِسْلاَمِ بِعَمَلٍ وَالْجِهَادُ مَاضٍ مُنْذُ بَعَثَنِيَ اللَّهُ إِلَى أَنْ يُقَاتِلَ آخِرُ أُمَّتِي الدَّجَّالَ لاَ يُبْطِلُهُ جَوْرُ جَائِرٍ وَلاَ عَدْلُ عَادِلٍ وَالإِيمَانُ بِالأَقْدَارِ  

The Prophet ﷺ said: Striving in the path of Allah (jihad) is incumbent on you along with every ruler, whether he is pious or impious; the prayer is obligatory on you behind every believer, pious or impious, even if he commits grave sins; the (funeral) prayer is incumbent upon every Muslim, pious and impious, even if he commits major sins.  

قَالَ رَسُولُ اللَّهِ ﷺ الْجِهَادُ وَاجِبٌ عَلَيْكُمْ مَعَ كُلِّ أَمِيرٍ بَرًّا كَانَ أَوْ فَاجِرًا وَالصَّلاَةُ وَاجِبَةٌ عَلَيْكُمْ خَلْفَ كُلِّ مُسْلِمٍ بَرًّا كَانَ أَوْ فَاجِرًا وَإِنْ عَمِلَ الْكَبَائِرَ وَالصَّلاَةُ وَاجِبَةٌ عَلَى كُلِّ مُسْلِمٍ بَرًّا كَانَ أَوْ فَاجِرًا وَإِنْ عَمِلَ الْكَبَائِرَ