The month of Ramadan is that in which the Qur'an was revealed, a guidance to men and clear proofs of the guidance and the Criterion. So whoever of you is present in the month, he shall fast therein, and whoever is sick or on a journey, (he shall fast) a (like) number of other days. Allah desires ease for you, and He desires not hardship for you, and (He desires) that you should complete the number and that you should exalt the greatness of Allah for having guided you and that you may give thanks.