Fast - making up

"Making up" the Fast is not possible

"If during the Fast period a person falls ill and is unable to fast, but recovers before the Fast period is over, he can start to Fast again and continue until the end. Of course the Fast, as you know, can only be kept during the month set aside for that purpose."

(Shoghi Effendi, Principles of Baha'i Administration, pp. 9-10 ; quoted in Lights of Guidance, no. 780)

(Islám required fasts to be made up for those who missed it for certain conditions, such as women in their courses (see Fast - exemptions)

VI.B."6. Vowing to fast (in a month other than the one prescribed for fasting) is permissible. Vows which profit mankind are however preferable in the sight of God."

"QUESTION: Should a person wish to fast at a time other than in the month of 'Alá', is this permissible or not; and if he hath vowed or pledged himself to such a fast, is this valid and acceptable?

"ANSWER: The ordinance of fasting is such as hath already been revealed. Should someone pledge himself, however, to offer up a fast to God, seeking in this way the fulfilment of a wish, or to realize some other aim, this is permissible, now as heretofore. Howbeit, it is God's wish, exalted be His glory, that vows and pledges be directed to such objectives as will profit mankind."

(Bahá'u'lláh, Kitáb-i-Aqdas Question and Answer no. 71)

Note

This does not contradict the prior quotation, in that this permits voluntary fasts at other times, whereas the former prohibits the obligatory fast from being done at another time (i.e., being "made up" later).