Ayyaamam ma'doodaat; faman kaana minkum mareedan aw'alaa safarin fa'iddatum min ayyaamin ukhar; wa 'alal lazeena yuteeqoonahoo fidyatun ta'aamu miskeenin faman tatawwa'a khairan fahuwa khairulo lahoo wa an tasoomoo khairul lakum in kuntum ta'lamoon
The Fast is to be observed for a fixed number of days. If, however, anyone of you be sick or on a journey, he should fast the same number of other days. As for those who can fast (but do not), the expiation of this shall be the feeding of one needy person for one fast day, and whoso does more than this with a willing heart does it for his own good. But if you understand the thing, it is better for you to observe the Fast.
