The month of Ramadan is the month in which the Quran was revealed; a guide for the people, the most authoritative of all guidance and a criteria to discern right from wrong. Anyone of you who knows that the month of Ramadan has begun, he must start to fast. Those who are sick or on a journey have to fast the same number of days at another time. God does not impose any hardship upon you. He wants you to have comfort so that you may complete the fast, glorify God for His having given you guidance, and that, perhaps, you would give Him thanks.