The word(s) "unto" appears 183 time(s) in 161 verse(s) in Quran in Abdullah Yusuf Ali translation.

(91) Or do they say, "He forged it"? say: "Bring then a Sura like unto it, and call (to your aid) anyone you can besides Allah, if it be ye speak the truth!"

(92) Every soul that hath sinned, if it possessed all that is on earth, would fain give it in ransom: They would declare (their) repentance when they see the penalty: but the judgment between them will be with justice, and no wrong will be done unto them.

(93) If thou wert in doubt as to what We have revealed unto thee, then ask those who have been reading the Book from before thee: the Truth hath indeed come to thee from thy Lord: so be in no wise of those in doubt.

(94) Even if every Sign was brought unto them,- until they see (for themselves) the penalty grievous.

(95) Follow thou the inspiration sent unto thee, and be patient and constant, till Allah do decide: for He is the best to decide.

(96) (It teacheth) that ye should worship none but Allah. (Say): "Verily I am (sent) unto you from Him to warn and to bring glad tidings:

(97) Perchance thou mayest (feel the inclination) to give up a part of what is revealed unto thee, and thy heart feeleth straitened lest they say, "Why is not a treasure sent down unto him, or why does not an angel come down with him?" But thou art there only to warn! It is Allah that arrangeth all affairs!

(98) Or they may say, "He forged it," Say, "Bring ye then ten suras forged, like unto it, and call (to your aid) whomsoever ye can, other than Allah!- If ye speak the truth!

(99) He said: "O my people! See ye if (it be that) I have a Clear Sign from my Lord, and that He hath sent Mercy unto me from His own presence, but that the Mercy hath been obscured from your sight? shall we compel you to accept it when ye are averse to it?

(100) Such are some of the stories of the unseen, which We have revealed unto thee: before this, neither thou nor thy people knew them. So persevere patiently: for the End is for those who are righteous.