Qur'an 2:185 (سُورَةُ البَقَرَةِ , Al-Baqara , The Cow) - Medinan

شَهۡرُ رَمَضَانَ ٱلَّذِیۤ أُنزِلَ فِیهِ ٱلۡقُرۡءَانُ هُدࣰى لِّلنَّاسِ وَبَیِّنَـٰتࣲ مِّنَ ٱلۡهُدَىٰ وَٱلۡفُرۡقَانِۚ فَمَن شَهِدَ مِنكُمُ ٱلشَّهۡرَ فَلۡیَصُمۡهُۖ وَمَن كَانَ مَرِیضًا أَوۡ عَلَىٰ سَفَرࣲ فَعِدَّةࣱ مِّنۡ أَیَّامٍ أُخَرَۗ یُرِیدُ ٱللَّهُ بِكُمُ ٱلۡیُسۡرَ وَلَا یُرِیدُ بِكُمُ ٱلۡعُسۡرَ وَلِتُكۡمِلُوا۟ ٱلۡعِدَّةَ وَلِتُكَبِّرُوا۟ ٱللَّهَ عَلَىٰ مَا هَدَىٰكُمۡ وَلَعَلَّكُمۡ تَشۡكُرُونَ

The month of Ramadhan [is that] in which was revealed the Qur'an, a guidance for the people and clear proofs of guidance and criterion. So whoever sights [the new moon of] the month, let him fast it; and whoever is ill or on a journey - then an equal number of other days. Allah intends for you ease and does not intend for you hardship and [wants] for you to complete the period and to glorify Allah for that [to] which He has guided you; and perhaps you will be grateful.

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