Surah Al-Hadid 57:6
يُولِجُ ٱلَّيْلَ فِى ٱلنَّهَارِ وَيُولِجُ ٱلنَّهَارَ فِى ٱلَّيْلِ ۚ وَهُوَ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ ٦
EnglishSahih International
He causes the night to enter the day and causes the day to enter the night, and he is Knowing of that within the breasts.