91:9
قَدْ أَفْلَحَ مَن زَكَّىٰهَا
qad aflaḥa man zakkāhā
He has succeeded who purifies it,
— Saheeh International
The one who purifies his soul succeeds
— M. A. S. Abdel Haleem
Indeed he succeeds who purifies his ownself (i.e. obeys and performs all that Allâh ordered, by following the true Faith of Islâmic Monotheism and by doing righteous good deeds).
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali