Best of Mankind

Volume 8, Book 76, Number 501: 

Narrated Abu Sa'id Al-Khudri:

A bedouin came to the Prophet (sallAllahu alayhi wa salam) and said, "O Allah's Apostle! Who is the best of mankind!" The Prophet said, "A man who strives for Allah's Cause with his life and property, and also a man who lives (all alone) in a mountain path among the mountain paths to worship his Lord and save the people from his evil." 

[Sahih Bukhari]