I heard Messenger of Allah ﷺ saying, "There will appear some people among you whose prayer will make you look down upon yours, and whose fasting will make you look down upon yours, but they will recite the Qur'an which will not exceed their throats (they will not act on it) and they will go out of Islam as an arrow goes out through the game whereupon the archer would examine the arrowhead but see nothing, and look at the unfeathered arrow but see nothing, and look at the arrow feathers but see nothing, and finally he suspects to find something in the lower part of the arrow." (Using translation from Bukhārī 5058)
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «يَخْرُجُ قَوْمٌ تَحْقِرُونَ صَلَاتَكُمْ مَعَ صَلَاتِهِمْ وَصِيَامَكُمْ مَعَ صِيَامِهِمْ وَعَمَلَكُمْ مَعَ عَمَلِهِمْ يَقْرَءُونَ الْقُرْآنَ لَا يُجَاوِزُ حَنَاجِرَهُمْ يَمْرُقُونَ مِنَ الدِّينِ مُرُوقَ السَّهْمِ مِنَ الرَّمِيَّةِ يَنْظُرُ فِي النَّصْلِ فَلَا يَرَى شَيْئًا ثُمَّ يَنْظُرُ فِي الْقَدَحِ فَلَا يَرَى شَيْئًا ثُمَّ يَنْظُرُ فِي الرِّيشِ فَلَا يَرَى شَيْئًا وَيَتَمَادَى فِي الْفُوقِ»