An-Nisa' - 4:81

وَيَقُولُونَ طَاعَةٌ فَإِذَا بَرَزُواْ مِنْ عِندِكَ بَيَّتَ طَآئِفَةٌ مِّنْهُمْ غَيْرَ الَّذِي تَقُولُ وَاللّهُ يَكْتُبُ مَا يُبَيِّتُونَ فَأَعْرِضْ عَنْهُمْ وَتَوَكَّلْ عَلَى اللّهِ وَكَفَى بِاللّهِ وَكِيلاً
[4:81]
And they say: Obedience. But when they go out from your presence, a party of them decide by night upon doing otherwise than what you say; and Allah writes down what they decide by night, therefore turn aside from them and trust in Allah, and Allah is sufficient as a protector.
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.
And they say: (It is) obedience; but when they have gone forth from thee a party of them spend the night in planning other than what thou sayest. Allah recordeth what they plan by night. So oppose them and put thy trust in Allah. Allah is sufficient as Trustee.