The word(s) "let" appears 241 time(s) in 215 verse(s) in Quran in Mohsin Khan translation.

(21) If Allah helps you, none can overcome you; and if He forsakes you, who is there after Him that can help you? And in Allah (Alone) let believers put their trust.

(22) And let not those grieve you (O Muhammad صلى الله عليه وسلم) who rush with haste to disbelieve; verily, not the least harm will they do to Allah. It is Allah's Will to give them no portion in the Hereafter. For them there is a great torment.

(23) And let not the disbelievers think that Our postponing of their punishment is good for them. We postpone the punishment only so that they may increase in sinfulness. And for them is a disgracing torment.

(24) And let not those who covetously withhold of that which Allah has bestowed on them of His Bounty (Wealth) think that it is good for them (and so they do not pay the obligatory Zakat ). Nay, it will be worse for them; the things which they covetously withheld shall be tied to their necks like a collar on the Day of Resurrection . And to Allah belongs the heritage of the heavens and the earth; and Allah is Well-Acquainted with all that you do.

(25) let not the free disposal (and affluence) of the disbelievers throughout the land deceive you.

(26) And try orphans (as regards their intelligence) until they reach the age of marriage; if then you find sound judgement in them, release their property to them, but consume it not wastefully and hastily fearing that they should grow up, and whoever (amongst guardians) is rich, he should take no wages, but if he is poor, let him have for himself what is just and reasonable (according to his labour). And when you release their property to them, take witness in their presence; and Allah is All-Sufficient in taking account.

(27) And let those (executors and guardians) have the same fear in their minds as they would have for their own, if they had left weak offspring behind. So let them fear Allah and speak right words.

(28) Among those who are Jews, there are some who displace words from (their) right places and say: "We hear your word (O Muhammad صلى الله عليه وسلم and disobey," and "Hear and let you (O Muhammad صلى الله عليه وسلم) hear nothing." And Ra'ina with a twist of their tongues and as a mockery of the religion (Islam). And if only they had said: "We hear and obey", and "Do make us understand," it would have been better for them, and more proper; but Allah has cursed them for their disbelief, so they believe not except a few.

(29) let those (believers) who sell the life of this world for the Hereafter fight in the Cause of Allah, and whoso fights in the Cause of Allah, and is killed or gets victory, We shall bestow on him a great reward.

(30) When you (O Messenger Muhammad صلى الله عليه وسلم) are among them, and lead them in As-Salat (the prayer), let one party of them stand up [in Salat (prayer)] with you taking their arms with them; when they finish their prostrations, let them take their positions in the rear and let the other party come up which have not yet prayed, and let them pray with you taking all the precautions and bearing arms. Those who disbelieve wish, if you were negligent of your arms and your baggage, to attack you in a single rush, but there is no sin on you if you put away your arms because of the inconvenience of rain or because you are ill, but take every precaution for yourselves. Verily, Allah has prepared a humiliating torment for the disbelievers.