Sahih Bukhari Volume 1, Book 2, Hadith Number 10

Narated By Abu Musa : 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.”

References

Reference: Sahih al-Bukhari 11
In-Book Reference: Sahih al-Bukhari Book 2 Hadith 4