Fasting

Fast for a fixed number of days. But if any of you are ill or on a journey, then make up the days later. And for those who can only fast with hardship, they may compensate by feeding a needy person. But whoever volunteers more, it is better for them. Fasting is best for you, if only you knew.

2:184(Fast) a certain number of days; and (for) him who is sick among you, or on a journey, (the same) number of other days; and for those who can afford it there is a ransom: the feeding of a man in need - but whoso doeth good of his own accord, it is better for him: and that ye fast is better for you if ye did but know -