وَإِذَا جَآءُوكُمۡ قَالُوٓاْ ءَامَنَّا وَقَد دَّخَلُواْ بِٱلۡكُفۡرِ وَهُمۡ قَدۡ خَرَجُواْ بِهِۦۚ وَٱللَّهُ أَعۡلَمُ بِمَا كَانُواْ يَكۡتُمُونَ ٦١
Wa idhā jāʾūkum qālū āmannā wa qad dakhalū bil-kufri wa hum qad kharajū bih, wallāhu aʿlamu bimā kānū yaktumūn.
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.
Translation: Sahih International