Musnad Ahmad 27:1423

Harun narrated to us, Ibn Wahb narrated to us, Usamah narrated to me, from Muhammad ibn Abdullah ibn Amr ibn Uthman, from Abdullah ibn Dinar, from Abdullah ibn Umar, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "People are like a hundred camels; you will hardly find a riding camel among them—or when will you find a riding camel among them?" He said: And the Messenger of Allah (peace and blessings of Allah be upon him) said: "We do not know of anything better than a hundred of its like, except for the believing man."