It pays to do your own research and not believe all you read.
The email is a hoax.
The quote is not from anywhere in the Koran (or Quran).
Chapter 9 verse 11 actually says "But if they repent and keep up prayer and pay the poor-rate, they are your brethren in faith; and we make the communications clear for a people who know." (M. H. Shakir translation)
