Quran 47:16 from Surah Muhammad on Divine Marvels.
وَمِنۡهُم مَّن يَسۡتَمِعُ إِلَيۡكَ حَتَّىٰٓ إِذَا خَرَجُواْ مِنۡ عِندِكَ قَالُواْ لِلَّذِينَ أُوتُواْ ٱلۡعِلۡمَ مَاذَا قَالَ ءَانِفًاۚ أُوْلَٰٓئِكَ ٱلَّذِينَ طَبَعَ ٱللَّهُ عَلَىٰ قُلُوبِهِمۡ وَٱتَّبَعُوٓاْ أَهۡوَآءَهُمۡ
English translation: And among them (are some) who listen to you until when they depart from you they say to those who were given the knowledge What (has) he said just now Those (are) the ones Allah has set a seal Allah has set a seal upon their hearts and they follow their desires
Transliteration: wamin'hum man yastami'u ilayka hatta idha kharaju min indika qalu lilladhina utu al-'il'ma madha qala anifan ulaika alladhina taba'a al-lahu ala qulubihim wa-ittaba'u ahwaahum