Those who have attained to faith, and who have not obscured their faith by wrongdoing-it is they who shall be secure, since it is they who have found the right path!
Al-An'am (The Cattle) Verse 83
The Prophet said, "None of you will have faith till he wishes for his (Muslim) brother what he likes for himself."
Sahih Bukhari: Volume 1, Book 2, Number 12