The word(s) "certainly" appears 476 time(s) in 417 verse(s) in Quran in Muhammad Habib Shakir translation.

(301) And certainly We gave the Book to Musa, so be not in doubt concerning the receiving of it, and We made it a guide for the children of Israel.

(302) And if an entry were made upon them from the outlying parts of it, then they were asked to wage war, they would certainly have done it, and they would not have stayed in it but a little while.

(303) And certainly they had made a covenant with Allah before, that) they would not turn (their) backs; and Allah's covenant shall be inquired of.

(304) certainly you have in the Apostle of Allah an excellent exemplar for him who hopes in Allah and the latter day and remembers Allah much.

(305) If the hypocrites and those in whose hearts is a disease and the agitators in the city do not desist, We shall most certainly set you over them, then they shall not be your neighbors in it but for a little while;

(306) And those who disbelieve say: The hour shall not come upon us. Say: Yea! by my Lord, the Knower of the unseen, it shall certainly come upon you; not the weight of an atom becomes absent from Him, in the heavens or in the earth, and neither less than that nor greater, but (all) is in a clear book

(307) And certainly We gave to Dawood excellence from Us: O mountains! sing praises with him, and the birds; and We made the iron pliant to him,

(308) certainly there was a sign for Saba in their abode; two gardens on the right and the left; eat of the sustenance of your Lord and give thanks to Him: a good land and a Forgiving Lord!

(309) And certainly the Shaitan found true his conjecture concerning them, so they follow him, except a party of the believers.

(310) And those who disbelieve say: By no means will we believe in this Quran, nor in that which is before it; and could you see when the unjust shall be made to stand before their Lord, bandying words one with another! Those who were reckoned weak shall say to those who were proud: Had it not been for you we would certainly have been believers.