"Abu Sa'id al-Khudri said, "A man said, 'Messenger of Allah, who is the best of people?' The Messenger of Allah, may Allah bless him and grant him peace, said, 'A believer who does jihad in the way of Allah with his self and his wealth.' They said, 'Then who?' He said, 'A man who withdraws into a mountain ravine and worships his Lord.'""