Surat An-Noor (The Light) - النور

وَيَقُولُونَ ءَامَنَّا بِٱللَّهِ وَبِٱلرَّسُولِ وَأَطَعْنَا ثُمَّ يَتَوَلَّىٰ فَرِيقٌ مِّنْهُم مِّنۢ بَعْدِ ذَٰلِكَ وَمَآ أُو۟لَٰٓئِكَ بِٱلْمُؤْمِنِينَ ﴿٤٧﴾

And they say: We believe in Allah and in the apostle and we obey; then a party of them turn back after this, and these are not believers.