The word(s) "err" appears 126 time(s) in 119 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) And they who reject Our communications are deaf and dumb, in utter darkness; whom Allah pleases He causes to err and whom He pleases He puts on the right way.

(22) And thus do We try some of them by others so that they say: Are these they upon whom Allah has conferred benefit from among us? Does not Allah best know the grateful?

(23) And when Ibrahim said to his sire, Azar: Do you take idols for gods? Surely I see you and your people in manifest error.

(24) Then when he saw the moon rising, he said: Is this my Lord? So when it set, he said: If my Lord had not guided me I should certainly be of the erring people.

(25) Therefore (for) whomsoever Allah intends that He would guide him aright, He expands his breast for Islam, and (for) whomsoever He intends that He should cause him to err, He makes his breast strait and narrow as though he were ascending upwards; thus does Allah lay uncleanness on those who do not believe.

(26) A part has He guided aright and (as for another) part, error is justly their due, surely they took the Shaitans for guardians beside Allah, and they think that they are followers of the right

(27) The chiefs of his people said: Most surely we see you in clear error.

(28) He said: O my people! there is no error in me, but I am an apostle from the Lord of the worlds.

(29) I will turn away from My communications those who are unjustly proud in the earth; and if they see every sign they will not believe in It; and if they see the way of rectitude they do not take It for a way, and if they see the way of error. they take it for a way; this is because they rejected Our communications and were heedless of them.

(30) And Musa chose out of his people seventy men for Our appointment; so when the earthquake overtook them, he said: My Lord! if Thou hadst pleased, Thou hadst destroyed them before and myself (too); wilt Thou destroy us for what the fools among us have done? It is naught but Thy trial, Thou makest err with it whom Thou pleasest and guidest whom Thou pleasest: Thou art our Guardian, therefore forgive us and have mercy on us, and Thou art the best of the forgivers.