The word(s) "prayer" appears 130 time(s) in 90 verse(s) in Quran in Mohsin Khan translation.

(61) So glorify Allah [above all that (evil) they associate with Him (O believers)] when you come up to the evening [i.e. offer the (Maghrib ) sunset and ('Isha') night prayers], and when you enter the morning [i.e. offer the (Fajr) morning prayer].

(62) And His are all the praises and thanks in the heavens and the earth; and (glorify Him) in the afternoon (i.e. offer 'Asr prayer) and when you come up to the time, when the day begins to decline (i.e. offer Zuhr prayer). (Ibn 'Abbas said: "These are the five compulsory congregational prayers mentioned in the Qur'an)." [Tafsir At-Tabari]

(63) And glorify His Praises morning and afternoon [the early morning (Fajr) and 'Asr prayers].

(64) And verily, we (angels), we stand in rows (for the prayers as you Muslims stand in rows for your prayers);

(65) And verily, we (angels), indeed are those who glorify (Allah's Praises i.e. perform prayers).

(66) He said: "I did love the good (these horses) instead of remembering my Lord (in my 'Asr prayer)" till the time was over, and (the sun) had hidden in the veil (of night).

(67) Is one who is obedient to Allah, prostrating himself or standing (in prayer) during the hours of the night, fearing the Hereafter and hoping for the Mercy of his Lord (like one who disbelieves)? Say: "Are those who know equal to those who know not?" It is only men of understanding who will remember (i.e. get a lesson from Allah's Signs and Verses).

(68) 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].

(69) Muhammad (صلى الله عليه وسلم) is the Messenger of Allah. And those who are with him are severe against disbelievers, and merciful among themselves. You see them bowing and falling down prostrate (in prayer), seeking Bounty from Allah and (His) Good Pleasure. The mark of them (i.e. of their Faith) is on their faces (foreheads) from the traces of prostration (during prayers). This is their description in the Taurat (Torah). But their description in the Injeel (Gospel) is like a (sown) seed which sends forth its shoot, then makes it strong, and becomes thick and it stands straight on its stem, delighting the sowers, that He may enrage the disbelievers with them. Allah has promised those among them who believe (i.e. all those who follow Islamic Monotheism, the religion of Prophet Muhammad صلى الله عليه وسلم till the Day of Resurrection) and do righteous good deeds, forgiveness and a mighty reward (i.e. Paradise).

(70) So bear with patience (O Muhammad صلى الله عليه وسلم) all that they say, and glorify the Praises of your Lord, before the rising of the sun and before (its) setting (i.e. the Fajr, Zuhr, and 'Asr prayers) .