ذَلِكَ بِأَنَّ اللَّهَ يُولِجُ اللَّيْلَ فِي النَّهَارِ وَيُولِجُ النَّهَارَ فِي اللَّيْلِ وَأَنَّ اللَّهَ سَمِيعٌ بَصِيرٌ
[22:61]
That is because Allah causes the night to enter into the day and causes the day to enter into the night, and because Allah is Hearing, Seeing.
That is because Allah merges night into day, and He merges day into night, and verily it is Allah Who hears and sees (all things).
That is because Allah maketh the night to pass into the day and maketh the day to pass into the night, and because Allah is Hearer, Seer.