شَہْرُ رَمَضَانَ الَّذِيْۗ اُنْزِلَ فِيْہِ الْقُرْاٰنُ ھُدًى لِّلنَّاسِ وَ بَيِّنٰتٍ مِّنَ الْہُدٰى وَالْفُرْقَانِ۰ۚ فَمَنْ شَہِدَ مِنْكُمُ الشَّہْرَ فَلْيَصُمْہُ۰ۭ وَمَنْ كَانَ مَرِيْضًا اَوْ عَلٰي سَفَرٍ فَعِدَّۃٌ مِّنْ اَيَّامٍ اُخَرَ۰ۭ يُرِيْدُ اللہُ بِكُمُ الْيُسْرَ وَلَا يُرِيْدُ بِكُمُ الْعُسْرَ۰ۡوَلِتُكْمِلُوا الْعِدَّۃَ وَلِتُكَبِّرُوا اللہَ عَلٰي مَا ھَدٰىكُمْ وَلَعَلَّكُمْ تَشْكُرُوْنَ۱۸۵
Shahru ramadana allathee onzila feehi alquranu hudan lilnnasi wabayyinatin mina alhuda waalfurqani faman shahida minkumu alshshahra falyasumhu waman kana mareedan aw AAala safarin faAAiddatun min ayyamin okhara yureedu Allahu bikumu alyusra wala yureedu bikumu alAAusra walitukmiloo alAAiddata walitukabbiroo Allaha AAala ma hadakum walaAAallakum tashkuroona
Ramadan is the month in which the Qur'an was revealed as guidance to man and clear proof of the guidance, and criterion (of falsehood and truth). So when you see the new moon you should fast the whole month; but a person who is ill or travelling (and fails to do so) should fast on other days, as God wishes ease and not hardship for you, so that you complete the (fixed) number (of fasts), and give glory to God for the guidance, and be grateful.