[Fasting is for] a specific number of days; but if anyone of you is ill or on a journey, he should make up for those days. As for those who can only fast with hardship, compensation can be made by feeding a needy person [for each day]. But anyone who volunteers to give more, it is better for him. Yet fasting is better for you, if only you knew[81].
[81] The provision of this verse has been abrogated by the next verse: 185, with few exceptions, i.e., very old person, or pregnant, etc.