But there is [also] a kind of man who would willingly sell his own self in order to please God: and God is most compassionate towards His servants.
Al-Baqara (The Cow) Verse 207
Some people asked Allah's Apostle, "Whose Islam is the best? i.e. (Who is a very good Muslim)?" He replied, "One who avoids harming the Muslims with his tongue and hands."
Volume 1, Book 2, Number 10