Gleanings — Paragraph 571
Source (Arabic)
ّ الدّنيا ثمّ ألسنكم عن ذكر ما سويٰه ثمّ أركانكم عن كلّ ما يمنعكم عن اللّقا ويقرّبكم إلی ما يأمركم به الهوى اتّقوا اللّه يا قوم وكونوا
Translation
Cleanse from your hearts the love of worldly things, from your tongues every remembrance except His remembrance, from your entire being whatsoever may deter you from beholding His face, or may tempt you to follow the promptings of your evil and corrupt inclinations. Let God be your fear, O people, and be ye of them that tread the path of righteousness.