19وَلا تَكونوا كَالَّذينَ نَسُوا اللَّهَ فَأَنساهُم أَنفُسَهُم ۚ أُولٰئِكَ هُمُ الفاسِقونَ(Irfan-ul-Quran)And be not like those who forgot Allah. So Allah made them forget their own souls (that they could send forward some good for their own souls). It is they who are defiant.