Quran

 59:19

وَلَا تَكُونُوا كَالَّذِينَ نَسُوا اللَّهَ فَأَنْسَاهُمْ أَنْفُسَهُمْ ۚ أُولَٰئِكَ هُمُ الْفَاسِقُونَ ﴿١٩﴾

19. And be not like those who forgot Allah, so He made them forget themselves. These are the sinners.