Translation of the verse 9 from Surah Ash-Shams : Number of verses 15 - - page 595 - Part 30.
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).
He has succeeded who purifies it,
(91:9) He who purifies it will prosper,
Source : Ash-Shams Verse 9: He has succeeded who purifies it,