إِتَّعِظُوا بِمَنْ كانَ قَبْلَكُمْ قَبْلَ أَنْ يَتَّعِظَ بِكُمْ مِنْ بَعْدَكُمْ
Imam Ali (a.s.) said
Take counsel from your predecessors before the posterity takes counsel from your life and destiny.