﴿وَإِذَا جَاءُوكُمْ قَالُوا آمَنَّا وَقَدْ دَخَلُوا بِالْكُفْرِ وَهُمْ قَدْ خَرَجُوا بِهِ ۚ وَاللَّهُ أَعْلَمُ بِمَا كَانُوا يَكْتُمُونَ﴾
61. When they come to you, they say: "We believe." But in fact they enter with (an intention of) disbelief and they go out with the same. And Allâh knows all what they were hiding.