The word(s) "truth" appears 293 time(s) in 276 verse(s) in Quran in Muhammad Pickthal translation.

(21) And their Prophet said unto them: Lo! the token of his kingdom is that there shall come unto you the ark wherein is peace of reassurance from your Lord, and a remnant of that which the house of Moses and the house of Aaron left behind, the angels bearing it. Lo! herein shall be a token for you if (in truth) ye are believers.

(22) These are the portents of Allah which We recite unto thee (Muhammad) with truth, and lo! thou art of the number of (Our) messengers;

(23) O ye who believe! Observe your duty to Allah, and give up what remaineth (due to you) from usury, if ye are (in truth) believers.

(24) He hath revealed unto thee (Muhammad) the Scripture with truth, confirming that which was (revealed) before it, even as He revealed the Torah and the Gospel.

(25) 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.

(26) Our Lord! We believe in that which Thou hast revealed and we follow him whom Thou hast sent. Enrol us among those who witness (to the truth).

(27) (This is) the truth from thy Lord (O Muhammad), so be not thou of those who waver.

(28) O People of the Scripture! Why disbelieve ye in the revelations of Allah, when ye (yourselves) bear witness (to their truth)?

(29) O People of the Scripture! Why confound ye truth with falsehood and knowingly conceal the truth?

(30) All food was lawful unto the Children of Israel, save that which Israel forbade himself, (in days) before the Torah was revealed. Say: Produce the Torah and read it (unto us) if ye are truthful.