إِنَّ فِي اخْتِلَافِ اللَّيْلِ وَالنَّهَارِ وَمَا خَلَقَ اللَّهُ فِي السَّمَاوَاتِ وَالْأَرْضِ لَآيَاتٍ لِّقَوْمٍ يَتَّقُونَ

Indeed in the alternation of night and day, and whatever Allah has created in the heavens and the earth, there are surely signs for a people who are Godwary.