Muhammad 47:16

وَمِنۡهُم مَّن يَسۡتَمِعُ إِلَيۡكَ حَتَّىٰٓ إِذَا خَرَجُواْ مِنۡ عِندِكَ قَالُواْ لِلَّذِينَ أُوتُواْ ٱلۡعِلۡمَ مَاذَا قَالَ ءَانِفًاۚ أُوْلَـٰٓئِكَ ٱلَّذِينَ طَبَعَ ٱللَّهُ عَلَىٰ قُلُوبِهِمۡ وَٱتَّبَعُوٓاْ أَهۡوَآءَهُمۡ 16

And among them, [O Muhammad], are those who listen to you, until when they depart from you, they say to those who were given knowledge, "What has he said just now?" Those are the ones of whom Allah has sealed over their hearts and who have followed their [own] desires