The word(s) "let" appears 320 time(s) in 279 verse(s) in Quran in Muhammad Pickthal translation.

(141) Nay, say they, (these are but) muddled dreams; nay, he hath but invented it; nay, he is but a poet. let him bring us a portent even as those of old (who were Allah's messengers) were sent (with portents).

(142) Until, when Gog and Magog are let loose, and they hasten out of every mound,

(143) The Day when We shall roll up the heavens as a recorder rolleth up a written scroll. As We began the first creation, We shall repeat it. (It is) a promise (binding) upon Us. Lo! We are to perform it.

(144) And among mankind is he who worshippeth Allah upon a narrow marge so that if good befalleth him he is content therewith, but if a trial befalleth him, he falleth away utterly. He loseth both the world and the Hereafter. That is the sheer loss.

(145) He calleth, beside Allah, unto that which hurteth him not nor benefiteth him. That is the far error.

(146) He calleth unto him whose harm is nearer than his benefit; verily an evil patron and verily an evil friend!

(147) Whoso is wont to think (through envy) that Allah will not give him (Muhammad) victory in the world and the Hereafter (and is enraged at the thought of his victory), let him stretch a rope up to the roof (of his dwelling), and let him hang himself. Then let him see whether his strategy dispelleth that whereat he rageth!.

(148) Lo! Allah will cause those who believe and do good works to enter Gardens underneath which rivers flow, wherein they will be allowed armlets of gold, and pearls, and their raiment therein will be silk.

(149) Then let them make an end of their unkemptness and pay their vows and go around the ancient House.

(150) And they will bid thee hasten on the Doom, and Allah faileth not His promise, but lo! a Day with Allah is as a thousand years of what ye reckon.