The word(s) "truly" appears 170 time(s) in 163 verse(s) in Quran in Abdullah Yusuf Ali translation.

(121) Yet they attribute to some of His servants a share with Him (in his godhead)! truly is man a blasphemous ingrate avowed!

(122) And they said, "O thou sorcerer! Invoke thy Lord for us according to His covenant with thee; for we shall truly accept guidance."

(123) Thus did he make fools of his people, and they obeyed him: truly were they a people rebellious (against Allah).

(124) (Allah has knowledge) of the (Prophet's) cry, "O my Lord! truly these are people who will not believe!"

(125) We shall indeed remove the Penalty for a while, (but) truly ye will revert (to your ways).

(126) "Taste thou (this)! truly wast thou mighty, full of honour!

(127) "truly this is what ye used to doubt!"

(128) Say: "See ye? If (this teaching) be from Allah, and ye reject it, and a witness from among the Children of Israel testifies to its similarity (with earlier scripture), and has believed while ye are arrogant, (how unjust ye are!) truly, Allah guides not a people unjust."

(129) We have enjoined on man kindness to his parents: In pain did his mother bear him, and in pain did she give him birth. The carrying of the (child) to his weaning is (a period of) thirty months. At length, when he reaches the age of full strength and attains forty years, he says, "O my Lord! Grant me that I may be grateful for Thy favour which Thou has bestowed upon me, and upon both my parents, and that I may work righteousness such as Thou mayest approve; and be gracious to me in my issue. truly have I turned to Thee and truly do I bow (to Thee) in Islam."

(130) Mention (Hud) one of 'Ad's (own) brethren: Behold, he warned his people about the winding Sand-tracts: but there have been warners before him and after him: "Worship ye none other than Allah: truly I fear for you the Penalty of a Mighty Day."