[And,] verily, those who have attained to faith, and do righteous deeds - it is they, they who are the best of all creatures.
Al-Baiyinah (The Clear Evidence) Verse 7
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