The word(s) "fast" appears 74 time(s) in 64 verse(s) in Quran in Muhammad Pickthal translation.

(11) The steadfast, and the truthful, and the obedient, those who spend (and hoard not), those who pray for pardon in the watches of the night.

(12) How can ye disbelieve, when it is ye unto whom Allah's revelations are recited, and His messenger is in your midst? He who holdeth fast to Allah, he indeed is guided unto a right path.

(13) And hold fast, all of you together, to the cable of Allah, and do not separate. And remember Allah's favour unto you: How ye were enemies and He made friendship between your hearts so that ye became as brothers by His grace; and (how) ye were upon the brink of an abyss of fire, and He did save you from it. Thus Allah maketh clear His revelations unto you, that haply ye may be guided,

(14) Or deemed ye that ye would enter paradise while yet Allah knoweth not those of you who really strive, nor knoweth those (of you) who are steadfast?

(15) And with how many a prophet have there been a number of devoted men who fought (beside him). They quailed not for aught that befell them in the way of Allah, nor did they weaken, nor were they brought low. Allah loveth the steadfast.

(16) Assuredly ye will be tried in your property and in your persons, and ye will hear much wrong from those who were given the Scripture before you, and from the idolaters. But if ye persevere and ward off (evil), then that is of the steadfast heart of things.

(17) It is not for a believer to kill a believer unless (it be) by mistake. He who hath killed a believer by mistake must set free a believing slave, and pay the blood-money to the family of the slain, unless they remit it as a charity. If he (the victim) be of a people hostile unto you, and he is a believer, then (the penance is) to set free a believing slave. And if he cometh of a folk between whom and you there is a covenant, then the blood-money must be paid unto his folk and (also) a believing slave must be set free. And whoso hath not the wherewithal must fast two consecutive months. A penance from Allah. Allah is Knower, Wise.

(18) Save those who repent and amend and hold fast to Allah and make their religion pure for Allah (only). Those are with the believers. And Allah will bestow on the believers an immense reward.

(19) As for those who believe in Allah, and hold fast unto Him, them He will cause to enter into His mercy and grace, and will guide them unto Him by a straight road.

(20) O ye who believe! Be steadfast witnesses for Allah in equity, and let not hatred of any people seduce you that ye deal not justly. Deal justly, that is nearer to your duty. Observe your duty to Allah. Lo! Allah is Informed of what ye do.