Hadith about ignoring the compulsory prayers...

أَمَّا الَّذِي يُثْلَغُ رَأْسُهُ بِالْحَجَرِ فَإِنَّهُ يَأْخُذُ الْقُرْآنَ فَيَرْفِضُهُ وَيَنَامُ عَنِ الصَّلاَةِ الْمَكْتُوبَةِ

The Prophet said: (In a dream, I saw someone) whose head was being crushed with a stone (and he) was the one who learnt the Qur’an but never acted on it, and slept ignoring the compulsory prayers.

Source: Saheeh Bukhari 1143