The month of Ramadan is the month when the Quran was sent down as guidance for mankind with clear proofs of guidance and the criterion by which to distinguish right from wrong. Therefore, whoever of you is present in that month, let him fast; but he who is ill or on a journey shall fast a similar number of days later on. God desires ease for you, not hardship. He desires you to fast the whole month, so that you may glorify Him for His having guided you and so that you may be grateful to Him.