Fasting When Sick or On A Journey & Revelation of The Quran

أَيَّامٗا مَّعۡدُودَٰتٖۚ فَمَن كَانَ مِنكُم *مَّرِيضًا أَوۡ عَلَىٰ سَفَرٖ* فَعِدَّةٞ مِّنۡ أَيَّامٍ أُخَرَۚ وَعَلَى ٱلَّذِينَ يُطِيقُونَهُۥ فِدۡيَةٞ طَعَامُ مِسۡكِينٖۖ فَمَن تَطَوَّعَ خَيۡرٗا فَهُوَ خَيۡرٞ لَّهُۥۚ وَأَن تَصُومُواْ خَيۡرٞ لَّكُمۡ إِن كُنتُمۡ تَعۡلَمُونَ

"(Observing fasting) for a fixed number of days. So, whoever among you are *ill or on a journey* (and decided not to fast), the same number (should be made up) from other days. And as for those who can fast but with difficulty (if they do not fast), they have to feed a needy person. Whoever does good on his own accord (that is to feed more than a needy person for each day), then it is better for him. And it is better for you to fast if only you knew. "

[al-Baqarah, verse 184 (2:184)] 

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

"Month of Ramadan in which was *revealed the Quran*, a guidance to men and explanations for the guidance and judgment (between right and wrong). Therefore, anyone who is present (at his home) during that month should fast."

[al-Baqarah, verse 185 (2:185)]