The word(s) "occur" appears 3 time(s) in 3 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) They ask thee about the (final) Hour - when will be its appointed time? Say: "The knowledge thereof is with my Lord (alone): None but He can reveal as to when it will occur. Heavy were its burden through the heavens and the earth. Only, all of a sudden will it come to you." They ask thee as if thou Wert eager in search thereof: Say: "The knowledge thereof is with Allah (alone), but most men know not."

(2) Then it occurred to the men, after they had seen the signs, (that it was best) to imprison him for a time.

(3) No kind of calamity can occur, except by the leave of Allah: and if any one believes in Allah, (Allah) guides his heart (aright): for Allah knows all things.