Sura al-Nisāʾ 4:81

وَيَقُولُونَ طَاعَةٌ فَإِذَا بَرَزُوا۟ مِنْ عِندِكَ بَيَّتَ طَآئِفَةٌ مِّنْهُمْ غَيْرَ ٱلَّذِى تَقُولُ وَٱللَّـهُ يَكْتُبُ مَا يُبَيِّتُونَ فَأَعْرِضْ عَنْهُمْ وَتَوَكَّلْ عَلَى ٱللَّـهِ وَكَفَىٰ بِٱللَّـهِ وَكِيلًا

wa-yaqūlūna ṭāʿatun fa-idhā barazū min ʿindika bayyata ṭāʾifatun minhum ghayra alladhī taqūlu wallāhu yaktubu mā yubayyitūna fa-aʿriḍ ʿanhum wa-tawakkal ʿalā allāhi wa-kafā billāhi wakīlan

They have "Obedience" on their lips; but when they leave thee, a section of them Meditate all night on things very different from what thou tellest them. But Allah records their nightly (plots): So keep clear of them, and put thy trust in Allah, and enough is Allah as a disposer of affairs.