Surah Al-Isra, Verse 12

وَجَعَلۡنَا ٱلَّيۡلَ وَٱلنَّهَارَ ءَايَتَيۡنِۖ فَمَحَوۡنَآ ءَايَةَ ٱلَّيۡلِ وَجَعَلۡنَآ ءَايَةَ ٱلنَّهَارِ مُبۡصِرَةٗ لِّتَبۡتَغُواْ فَضۡلٗا مِّن رَّبِّكُمۡ وَلِتَعۡلَمُواْ عَدَدَ ٱلسِّنِينَ وَٱلۡحِسَابَۚ وَكُلَّ شَيۡءٖ فَصَّلۡنَٰهُ تَفۡصِيلٗا١٢

wajaʿalnā al-layla wal-nahāra āyatayni famaḥawnā āyata al-layli wajaʿalnā āyata l-nahāri mub'ṣiratan litabtaghū faḍlan min rabbikum walitaʿlamū ʿadada l-sinīna wal-ḥisāba wakulla shayin faṣṣalnāhu tafṣīlan

And We have made the night and day two signs, and We erased the sign of the night and made the sign of the day visible that you may seek bounty from your Lord and may know the number of years and the account [of time]. And everything We have set out in detail.