Quran 2:185 from Surah Al-Baqara on Divine Marvels.
شَهۡرُ رَمَضَانَ ٱلَّذِيٓ أُنزِلَ فِيهِ ٱلۡقُرۡءَانُ هُدٗى لِّلنَّاسِ وَبَيِّنَٰتٖ مِّنَ ٱلۡهُدَىٰ وَٱلۡفُرۡقَانِۚ فَمَن شَهِدَ مِنكُمُ ٱلشَّهۡرَ فَلۡيَصُمۡهُۖ وَمَن كَانَ مَرِيضًا أَوۡ عَلَىٰ سَفَرٖ فَعِدَّةٞ مِّنۡ أَيَّامٍ أُخَرَۗ يُرِيدُ ٱللَّهُ بِكُمُ ٱلۡيُسۡرَ وَلَا يُرِيدُ بِكُمُ ٱلۡعُسۡرَ وَلِتُكۡمِلُواْ ٱلۡعِدَّةَ وَلِتُكَبِّرُواْ ٱللَّهَ عَلَىٰ مَا هَدَىٰكُمۡ وَلَعَلَّكُمۡ تَشۡكُرُونَ
English translation: Month (of) Ramadhaan (is) that was revealed therein the Quran a Guidance for mankind and clear proofs of [the] Guidance and the Criterion So whoever witnesses among you the month then he should fast in it and whoever is sick or on a journey then prescribed number (should be made up) from days other Intends Allah for you [the] ease and not intends for you [the] hardship so that you complete the prescribed period and that you magnify Allah for [what] He guided you so that you may (be) grateful
Transliteration: shahru ramadana alladhi unzila fihi al-qur'anu hudan lilnnasi wabayyinatin mina al-huda wal-fur'qani faman shahida minkumu al-shahra falyasum'hu waman kana maridan aw ala safarin fa'iddatun min ayyamin ukhara yuridu al-lahu bikumu al-yus'ra wala yuridu bikumu al-'us'ra walituk'milu al-'idata walitukabbiru al-laha ala ma hadakum wala'allakum tashkuruna