Surah Al-Hadid (الحديد) Ayah 6 - Tafsir

يُولِجُ ٱلَّيْلَ فِى ٱلنَّهَارِ وَيُولِجُ ٱلنَّهَارَ فِى ٱلَّيْلِ ۚ وَهُوَ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ

"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."