5 verses have
heaven
in Edition Clear Qur'an by Talal Itani / Al-Anbiyaa (The Prophets)

21:4He said, “My Lord knows what is said in the heaven and the earth; and He is the Hearer, the Knower.”

21:19To Him belongs everyone in the heavens and the earth. Those near Him are not too proud to worship Him, nor do they waver.

21:30Do the disbelievers not see that the heavens and the earth were one mass, and We tore them apart? And We made from water every living thing. Will they not believe?

21:56He said, “Your Lord is the Lord of the heavens and the earth, the One who created them, and I bear witness to that.

21:104On the Day when We fold the heaven, like the folding of a book. Just as We began the first creation, We will repeat it—a promise binding on Us. We will act.