Quran 23:1-6:
The believers have indeed attained true success:1 (23:2) those who,2 in their Prayers, humble themselves;3 (23:3) who avoid whatever is vain and frivolous;4 (23:4) who observe Zakah;5 (23:5) who strictly guard their private parts6 (23:6) save from their wives, or those whom their right hands possess; for then, they are free from blame...