Qur'ān 24:47 · An-Nur (النور)

وَيَقُولُونَ ءَامَنَّا بِٱللَّهِ وَبِٱلرَّسُولِ وَأَطَعْنَا ثُمَّ يَتَوَلَّىٰ فَرِيقٌۭ مِّنْهُم مِّنۢ بَعْدِ ذَٰلِكَ ۚ وَمَآ أُو۟لَـٰٓئِكَ بِٱلْمُؤْمِنِينَ

But the hypocrites say, "We have believed in Allah and in the Messenger, and we obey"; then a party of them turns away after that. And those are not believers.