Translation:

14. But those will prosper who purify themselves.

Notes (Tafseer)

6091. Prosper. in the highest sense; attain to Bliss or Salvation; as opposed to "enter the Fire".

6092. The first process in godliness is to cleanse ourselves in body, mind, and soul. Then we shall be in a fit state to see and proclaim the Glory of Allah. That leads us to our actual absorption in Praise and Prayer.