9th Ayah from Surah Ash-Shams
He has succeeded who purifies it,
The one who purifies his soul succeeds
Indeed he succeeds who purifies his ownself (i.e. obeys and performs all that Allah ordered, by following the true Faith of Islamic Monotheism and by doing righteous good deeds).
success is really attained by him who purifies it,
He is indeed successful who causeth it to grow,
Truly he succeeds that purifies it,