Surah Al-Hadid, Ayah 6
Quran 57:6 · The Iron · Madani · Para 27 · Page 538
یُوْلِجُ الَّیْلَ فِی النَّهَارِ وَیُوْلِجُ النَّهَارَ فِی الَّیْلِ ؕ وَهُوَ عَلِیْمٌۢ بِذَاتِ الصُّدُوْرِ ۟
Transliteration
Yooliju allayla fee annahariwayooliju annahara fee allayi wahuwa AAaleemun bithatiassudoor
Saheeh 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.
Al-Mukhtasar fi Tafsir
He enters the night into the day and so the darkness arrives and people sleep; He enters the day into the night and so the light arrives and people go about their business. He is aware of everything that the hearts of His servants contain; none of it is hidden from Him.
Tafsir Ibn Kathir (abridged)
Explains 57:4–57:6 together — read it on 57:4