AN NISAA' — Ayat 81

وَيَقُولُونَ طَاعَةٌ فَإِذَا بَرَزُواْ مِنْ عِندِكَ بَيَّتَ طَآئِفَةٌ مِّنْهُمْ غَيْرَ الَّذِي تَقُولُ وَاللّهُ يَكْتُبُ مَا يُبَيِّتُونَ فَأَعْرِضْ عَنْهُمْ وَتَوَكَّلْ عَلَى اللّهِ وَكَفَى بِاللّهِ وَكِيلاً

And they say, "[We pledge] obedience." But when they leave you, a group of them spend the night determining to do other than what you say. But Allah records what they plan by night. So leave them alone and rely upon Allah . And sufficient is Allah as Disposer of affairs.