The Quran

۞ فَما لَكُم فِي المُنافِقينَ فِئَتَينِ وَاللَّهُ أَركَسَهُم بِما كَسَبوا ۚ أَتُريدونَ أَن تَهدوا مَن أَضَلَّ اللَّهُ ۖ وَمَن يُضلِلِ اللَّهُ فَلَن تَجِدَ لَهُ سَبيلًا

(Saheeh International)

What is [the matter] with you [that you are] two groups concerning the hypocrites,¹ while Allāh has made them fall back [into error and disbelief] for what they earned.² Do you wish to guide those whom Allāh has sent astray? And he whom Allāh sends astray – never will you find for him a way [of guidance].³

i.e., divided between two viewpoints – whether or not they should be fought and killed.
As the result of their disobedience and disloyalty.
Allāh (subḥānahu wa ta‘ālā) leaves or sends astray those who choose to reject His guidance.