Al-Mukhtasar
يُقَلِّبُ ٱللَّهُ ٱلَّيْلَ وَٱلنَّهَارَ ۚ إِنَّ فِى ذَٰلِكَ لَعِبْرَةً لِّأُو۟لِى ٱلْأَبْصَـٰرِ ﴿٤٤﴾
Allah alternates between the length of the day and night. Indeed, in that alternation is a lesson in the power of Allah and His oneness, for those who have foresight.