The word(s) "truly" appears 138 time(s) in 136 verse(s) in Quran in Mohsin Khan translation.

(31) And so judge (you O Muhammad صلى الله عليه وسلم) among them by what Allah has revealed and follow not their vain desires, but beware of them lest they turn you (O Muhammad صلى الله عليه وسلم) far away from some of that which Allah has sent down to you. And if they turn away, then know that Allah's Will is to punish them for some sins of theirs. And truly, most of men are Fasiqun (rebellious and disobedient to Allah).

(32) And (remember) when Allah will say (on the Day of Resurrection): "O 'Îsa (Jesus), son of Maryam (Mary)! Did you say unto men: 'Worship me and my mother as two gods besides Allah?' " He will say: "Glory be to You! It was not for me to say what I had no right (to say). Had I said such a thing, You would surely have known it. You know what is in my inner-self though I do not know what is in Yours; truly, You, only You, are the All-Knower of all that is hidden (and unseen).

(33) Say (O Muhammad صلى الله عليه وسلم): "What thing is the most great in witness?" Say: "Allah (the Most Great!) is Witness between me and you; this Qur'an has been revealed to me that I may therewith warn you and whomsoever it may reach. Can you verily bear witness that besides Allah there are other alihah (gods)?" Say "I bear no (such) witness!" Say: "But in truth He (Allah) is the only one Ilah (God). And truly I am innocent of what you join in worship with Him."

(34) Say (O Muhammad صلى الله عليه وسلم): "Who rescues you from the darkness of the land and the sea (dangers like storms), (when) you call upon Him in humility and in secret (saying): If He (Allah) only saves us from this (danger), we shall truly be grateful."

(35) And truly you have come unto Us alone (without wealth, companions or anything else) as We created you the first time. You have left behind you all that which We had bestowed on you. We see not with you your intercessors whom you claimed to be partners with Allah. Now all relations between you and them have been cut off, and all that you used to claim has vanished from you.

(36) Say (O Muhammad صلى الله عليه وسلم): "truly, my Lord has guided me to a Straight Path, a right religion, the religion of Ibrahim (Abraham), Hanifa [i.e. the true Islamic Monotheism - to believe in One God (Allah i.e. to worship none but Allah, Alone)] and he was not of Al-Mushrikun (See V.2:105)."

(37) truly Allah has given you victory on many battle fields, and on the Day of Hunain (battle) when you rejoiced at your great number, but it availed you naught and the earth, vast as it is, was straitened for you, then you turned back in flight.

(38) They swear by Allah that they are truly of you while they are not of you, but they are a people (hypocrites) who are afraid (that you may kill them).

(39) He it is Who enables you to travel through land and sea, till when you are in the ships, and they sail with them with a favourable wind, and they are glad therein, then comes a stormy wind and the waves come to them from all sides, and they think that they are encircled therein. Then they invoke Allah, making their Faith pure for Him Alone, (saying): "If You (Allah) deliver us from this, we shall truly be of the grateful."

(40) truly! Allah wrongs not mankind in aught; but mankind wrong themselves.