The word(s) "fast" appears 31 time(s) in 26 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) Surely the men who submit and the women who submit, and the believing men and the believing women, and the obeying men and the obeying women, and the truthful men and the truthful women, and the patient men and the patient women and the humble men and the humble women, and the almsgiving men and the almsgiving women, and the fasting men and the fasting women, and the men who guard their private parts and the women who guard, and the men who remember Allah much and the women who remember-- Allah has prepared for them forgiveness and a mighty reward.

(22) To this then go on inviting, and go on steadfastly on the right way as you are commanded, and do not follow their low desires, and say: I believe in what Allah has revealed of the Book, and I am commanded to do justice between you: Allah is our Lord and your Lord; we shall have our deeds and you shall have your deeds; no plea need there be (now) between us and you: Allah will gather us together, and to Him is the return.

(23) Or have We given them a book before it so that they hold fast to it?

(24) Therefore hold fast to that which has been revealed to you; surely you are on the right path.

(25) But whoever has not the means, let him fast for two months successively before they touch each other; then as for him who is not able, let him feed sixty needy ones; that is in order that you may have faith in Allah and His Apostle, and these are Allah's limits, and the unbelievers shall have a painful punishment.

(26) Maybe, his Lord, if he divorce you, will give him in your place wives better than you, submissive, faithful, obedient, penitent, adorers, fasters, widows and virgins.