(Al-Qasas) 28 : 73
وَمِنْ رَحْمَتِهِ جَعَلَ لَكُمُ اللَّيْلَ وَالنَّهَارَ لِتَسْكُنُوا فِيهِ وَلِتَبْتَغُوا مِنْ فَضْلِهِ وَلَعَلَّكُمْ تَشْكُرُونَ
And of His Mercy He made for you the night and the day that you may rest in it and seek from His bounty, and perhaps you may be grateful.
Lord has taught man Adhikr which is the constitution, ways, and practices of the Impartial Lord as well as the Knowledge of past, present, and future as told in verse 45: 13. See explanation 6: 26, 158, and 16: 78.