Al-Mukhtasar
إِنَّ فِى ذَٰلِكَ لَذِكْرَىٰ لِمَن كَانَ لَهُۥ قَلْبٌ أَوْ أَلْقَى ٱلسَّمْعَ وَهُوَ شَهِيدٌ ﴿٣٧﴾
In that destruction of the previous nations which has been mentioned are a reminder and lesson for one who has a heart to understand with, or who listens attentively with presence of mind, and not absentmindedly.