Musnad Ahmad 30:1701

Yahya ibn Ishaq narrated to us, he said: Al-Bara’ narrated to us, he said: Abdullah ibn Shaqiq narrated to me, from Abu Hurairah, he said: The Messenger of Allah, peace and blessings of Allah be upon him, said: "Shall I not inform you of the worst among you?" He said: "They are the talkative ones, the ones who speak pretentiously. Shall I not inform you of the best among you? Those of you with the best character."