The word(s) "exertion" appears 2 time(s) in 2 verse(s) in Quran in Saheeh International translation.

(1) And when he reached with him [the age of] exertion, he said, "O my son, indeed I have seen in a dream that I [must] sacrifice you, so see what you think." He said, "O my father, do as you are commanded. You will find me, if Allah wills, of the steadfast."

(2) O mankind, indeed you are laboring toward your Lord with [great] exertion and will meet it.