5:61
وَإِذَا جَآءُوكُمْ قَالُوٓا۟ ءَامَنَّا وَقَد دَّخَلُوا۟ بِٱلْكُفْرِ وَهُمْ قَدْ خَرَجُوا۟ بِهِۦ ۚ وَٱللَّهُ أَعْلَمُ بِمَا كَانُوا۟ يَكْتُمُونَ
wa-idhā jāūkum qālū āmannā waqad dakhalū bil-kuf'ri wahum qad kharajū bihi wal-lahu aʿlamu bimā kānū yaktumūna
When they come to you [believers], they say, ‘We believe,’ but they come disbelieving and leave disbelieving- God knows best what they are hiding.
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.