The word(s) "let" appears 245 time(s) in 205 verse(s) in Quran in Abdullah Yusuf Ali translation.

(81) "And O my people! let not my dissent (from you) cause you to sin, lest ye suffer a fate similar to that of the people of Noah or of Hud or of Salih, nor are the people of Lut far off from you!

(82) They will dwell therein for all the time that the heavens and the earth endure, except as thy Lord willeth: for thy Lord is the (sure) accomplisher of what He planneth.

(83) And those who are blessed shall be in the Garden: They will dwell therein for all the time that the heavens and the earth endure, except as thy Lord willeth: a gift without break.

(84) Then there came a caravan of travellers: they sent their water-carrier (for water), and he let down his bucket (into the well)... He said: "Ah there! Good news! Here is a (fine) young man!" So they concealed him as a treasure! But Allah knoweth well all that they do!

(85) Further he said: "O my sons! enter not all by one gate: enter ye by different gates. Not that I can profit you aught against Allah (with my advice): None can command except Allah: On Him do I put my trust: and let all that trust put their trust on Him."

(86) He said: "This day let no reproach be (cast) on you: Allah will forgive you, and He is the Most Merciful of those who show mercy!

(87) For each (such person) there are (angels) in succession, before and behind him: They guard him by command of Allah. Allah does not change a people's lot unless they change what is in their hearts. But when (once) Allah willeth a people's punishment, there can be no turning it back, nor will they find, besides Him, any to protect.

(88) Remember! Moses said to his people: "Call to mind the favour of Allah to you when He delivered you from the people of Pharaoh: they set you hard tasks and punishments, slaughtered your sons, and let your women-folk live: therein was a tremendous trial from your Lord."

(89) Their messengers said to them: "True, we are human like yourselves, but Allah doth grant His grace to such of his servants as He pleases. It is not for us to bring you an authority except as Allah permits. And on Allah let all men of faith put their trust.

(90) Allah will establish in strength those who believe, with the word that stands firm, in this world and in the Hereafter; but Allah will leave, to stray, those who do wrong: Allah doeth what He willeth.