Word by Word Analysis

وَيَقُولُونَ طَاعَةٌ فَإِذَا بَرَزُوا۟ مِنْ عِندِكَ بَيَّتَ طَآئِفَةٌ مِّنْهُمْ غَيْرَ ٱلَّذِى تَقُولُ ۖ وَٱللَّهُ يَكْتُبُ مَا يُبَيِّتُونَ ۖ فَأَعْرِضْ عَنْهُمْ وَتَوَكَّلْ عَلَى ٱللَّهِ ۚ وَكَفَىٰ بِٱللَّهِ وَكِيلًا 81

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 Allāh records what they plan by night. So leave them alone and rely upon Allāh. And sufficient is Allāh as Disposer of affairs.