وَإِذَا جَآءُوكُمْ قَالُوٓا ءَامَنَّا وَقَد دَّخَلُوا بِٱلْكُفْرِ وَهُمْ قَدْ خَرَجُوا بِهِۦ ۚ وَٱللَّهُ أَعْلَمُ بِمَا كَانُوا يَكْتُمُونَ

Wa-itha jaookum qaloo amannawaqad dakhaloo bilkufri wahum qad kharajoo bihi wallahuaAAlamu bima kanoo yaktumoon

And when they come to you, they say, "We believe." But they have entered with disbelief [in their hearts], and they have certainly left with it. And Allāh is most knowing of what they were concealing.