The word(s) "constantly" appears 4 time(s) in 4 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) Attend constantly to prayers and to the middle prayer and stand up truly obedient to Allah.

(سورة البقرة, Al-Baqara, Chapter #2, Verse #238)
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(2) And this is a Book We have revealed, blessed, verifying that which is before it, and that you may warn the metropolis and those around her; and those who believe in the hereafter believe in it, and they attend to their prayers constantly.

(سورة الأنعام, Al-An'aam, Chapter #6, Verse #92)
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(3) And whatever is in the heavens and the earth is His, and to Him should obedience be (rendered) constantly; will you then guard against other than (the punishment of) Allah?

(سورة النحل, An-Nahl, Chapter #16, Verse #52)
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(4) And water flowing constantly,

(سورة الواقعة, Al-Waaqia, Chapter #56, Verse #31)
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