Surah 53. An-Najm, Ayah 40

Lit., "his striving will be seen", i.e., on the Day of Judgment, when - as the Qur'an states in many places - God "will make you [truly] understand all that you were doing [in life]".

The second and third aphorisms are that man must strive, or he will gain nothing; and that if he strives, the result must soon appear in sight and he will find his reward in full measure.