(Qaaf) 50 : 8
تَبْصِرَةً وَذِكْرَىٰ لِكُلِّ عَبْدٍ مُنِيبٍ
As an Insight and a Reminder for every servants turning to the Lord.
Lord Allah has created heaven, earth and all in between them including mankind to grasp lessons for the mankind endowed with intelligence by understanding the aim of life from Adhikr which reminds everything, so that they may live always depending the Lord by utilizing Adhikr as the Reminder and Insight. See explanation 3: 190-191; 13: 27-28; and 36: 36.