The word(s) "allahu-akbar" appears 3 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) And say: "All the praises and thanks be to Allah, Who has not begotten a son (or offspring), and Who has no partner in (His) Dominion, nor He is low to have a Wali (helper, protector or supporter). And magnify Him with all magnificence, [allahu-akbar (Allah is the Most Great)]."

(2) That they may witness things that are of benefit to them (i.e. reward of Hajj in the Hereafter, and also some worldly gain from trade), and mention the Name of Allah on appointed days (i.e. 10th, 11th, 12th, and 13th day of Dhul-Hijjah), over the beast of cattle that He has provided for them (for sacrifice), [at the time of their slaughtering by saying: (Bismillah, Wallahu-akbar, Allahumma Minka wa Ilaik).] Then eat thereof and feed therewith the poor having a hard time.

(3) And during a part of the night (also) glorify His praises (i.e. Maghrib and 'Isha prayers) and (so likewise) after the prayers [As-Sunnah, Nawafil - optional and additional prayers. And also glorify, praise and magnify Allah - Subhan Allah, Alhamdu lillah, allahu-akbar].