Surah An-Nur, Verse 47

وَيَقُولُونَ ءَامَنَّا بِٱللَّهِ وَبِٱلرَّسُولِ وَأَطَعۡنَا ثُمَّ يَتَوَلَّىٰ فَرِيقࣱ مِّنۡهُم مِّنۢ بَعۡدِ ذَٰلِكَۚ وَمَآ أُوْلَٰٓئِكَ بِٱلۡمُؤۡمِنِينَ ﴿٤٧﴾

Ve yekulune amenna billahi ve bir rasuli ve eta´na sümme yetevella ferıkum minhüm mim ba´di zalik ve ma ülaike bil mü´minın

“They say, "We believe in God and in the apostle, and we obey": but even after that, some of them turn away: they are not (really) Believers”