ذَلِكَ بِأَنَّهُمْ قَالُوا لِلَّذِينَ كَرِهُوا مَا نَزَّلَ اللَّهُ سَنُطِيعُكُمْ فِي بَعْضِ الْأَمْرِ وَاللَّهُ يَعْلَمُ إِسْرَارَهُمْ

That is because they said to those who loathed what Allah had sent down: ‘We shall obey you in some matters,’ and Allah knows their secret dealings.