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

(51) But they said: Our Lord! Make the stage between our journeys longer. And they wronged themselves, therefore We made them bywords (in the land) and scattered them abroad, a total scattering. Lo! herein verily are portents for each steadfast, grateful (heart).

(52) And when (his son) was old enough to walk with him, (Abraham) said: O my dear son, I have seen in a dream that I must sacrifice thee. So look, what thinkest thou? He said: O my father! Do that which thou art commanded. Allah willing, thou shalt find me of the steadfast.

(53) And (it was said unto him): Take in thine hand a branch and smite therewith, and break not thine oath. Lo! We found him steadfast, how excellent a slave! Lo! he was ever turning in repentance (to his Lord).

(54) Say: O My bondmen who believe! Observe your duty to your Lord. For those who do good in this world there is good, and Allah's earth is spacious. Verily the steadfast will be paid their wages without stint.

(55) But none is granted it save those who are steadfast, and none is granted it save the owner of great happiness.

(56) If He will He calmeth the wind so that they keep still upon its surface - Lo! herein verily are signs for every steadfast grateful (heart). -

(57) And verily whoso is patient and forgiveth - lo! that, verily, is (of) the steadfast heart of things.

(58) Or have We given them any scripture before (this Qur'an) so that they are holding fast thereto?

(59) So hold thou fast to that which is inspired in thee. Lo! thou art on a right path.

(60) Now when ye meet in battle those who disbelieve, then it is smiting of the necks until, when ye have routed them, then making fast of bonds; and afterward either grace or ransom till the war lay down its burdens. That (is the ordinance). And if Allah willed He could have punished them (without you) but (thus it is ordained) that He may try some of you by means of others. And those who are slain in the way of Allah, He rendereth not their actions vain.