The word(s) "promise" appears 137 time(s) in 117 verse(s) in Quran in Mohsin Khan translation.

(81) O mankind! Verily, the promise of Allah is true. So let not this present life deceive you, and let not the chief deceiver (Satan) deceive you about Allah.

(82) Say (O Muhammad صلى الله عليه وسلم): "Tell me or inform me (what) do you think about your (so-called) partner-gods to whom you call upon besides Allah? Show me, what they have created of the earth. Or have they any share in the heavens? Or have We given them a Book, so that they act on clear proof therefrom? Nay, the Zalimun (polytheists and wrong-doers) promise one another nothing but delusions."

(83) And they say: "When will this promise (i.e. Resurrection) be fulfilled, if you are truthful?"

(84) They will say: "Woe to us! Who has raised us up from our place of sleep." (It will be said to them): "This is what the Most Gracious (Allah) had promised, and the Messengers spoke truth!"

(85) This is Hell which you were promised!

(86) This it is what you (Al-Muttaqun - the pious - see V.2:2) are promised for the Day of Reckoning!

(87) But those who fear their Lord (Allah) and keep their duty to Him, for them are built lofty rooms, one above another under which rivers flow (i.e. Paradise). (This is) the promise of Allah: and Allah does not fail in (His) promise.

(88) And they will say: "All the praises and thanks be to Allah Who has fulfilled His promise to us and has made us inherit (this) land. We can dwell in Paradise where we will; how excellent a reward for the (pious, good) workers!"

(89) "Our Lord! And make them enter the 'Adn (Eden) Paradise (everlasting Gardens) which you have promised them - and to the righteous among their fathers, their wives, and their offspring! Verily, You are the All-Mighty, the All-Wise.

(90) So be patient (O Muhammad صلى الله عليه وسلم). Verily, the promise of Allah is true, and ask forgiveness for your fault and glorify the praises of your Lord in the 'Ashi (i.e. the time period after the midnoon till sunset) and in the Ibkar (i.e. the time period from early morning or sunrise till before midnoon) [it is said that, that means the five compulsory congregational Salat (prayers) or the 'Asr and Fajr prayers].