Surah Al Baqarah (2) verse 185:
"Ramadhan is the (month) in which was sent down the Qur'an, as a guide
to mankind, also clear (Signs) for guidance and judgment (Between
right and wrong). So every one of you who is present (at his home)
during that month should spendit in fasting, but if any one is ill, or
on a journey, the prescribed period (Should be made up) by days later.
Allah intends every facility for you; He does not wantto put to
difficulties. (He wants you) to complete the prescribed period, and to
glorify Him in thatHe has guided you; and perchance ye shall be
grateful. " [ 2:185 ]