The word(s) "seven" appears 34 time(s) in 26 verse(s) in Quran in Mohsin Khan translation.

(11) And indeed, We have bestowed upon you seven of Al-Mathani (seven repeatedly recited Verses), (i.e. Surat Al-Fatihah) and the Grand Qur'an.

(12) The seven heavens and the earth and all that is therein, glorify Him and there is not a thing but glorifies His Praise. But you understand not their glorification. Truly, He is Ever Forbearing, Oft-Forgiving.

(13) (Some) say they were three, the dog being the fourth among them; and (others) say they were five, the dog being the sixth, - guessing at the unseen; (yet others) say they were seven, and the dog being the eighth. Say (O Muhammad صلى الله عليه وسلم): "My Lord knows best their number; none knows them but a few." So debate not (about their number) except with the clear proof (which We have revealed to you). And consult not any of them (people of the Scripture - Jews and Christians) about (the affair of) the people of the Cave.

(14) And indeed We have created above you seven heavens (one over the other), and We are never unaware of the creation.

(15) Say: "Who is (the) Lord of the seven heavens, and (the) Lord of the Great Throne?"

(16) And if all the trees on the earth were pens and the sea (were ink wherewith to write), with seven seas behind it to add to its (supply), yet the Words of Allah would not be exhausted. Verily, Allah is All-Mighty, All-Wise.

(17) Then He completed and finished from their creation (as) seven heavens in two Days and He made in each heaven its affair. And We adorned the nearest (lowest) heaven with lamps (stars) to be an adornment as well as to guard (from the devils by using them as missiles against the devils). Such is the Decree of Him the All-Mighty, the All-Knower.

(18) Will you then dispute with him (Muhammad صلى الله عليه وسلم) about what he saw [during the Mi'raj: (Ascent of the Prophet صلى الله عليه وسلم to the seven heavens)]

(19) Near Sidrat-ul-Muntaha (a lote-tree of the utmost boundary over the seventh heaven beyond which none can pass).

(20) Have you not seen that Allah knows whatsoever is in the heavens and whatsoever is on the earth? There is no Najwa (secret counsel) of three but He is their fourth (with His Knowledge, while He Himself is over the Throne, over the seventh heaven), nor of five but He is their sixth (with His Knowledge), nor of less than that or more but He is with them (with His Knowledge) wheresoever they may be. And afterwards on the Day of Resurrection He will inform them of what they did. Verily, Allah is the All-Knower of everything.