Musnad Abu Ya'la al-Mawsili 155:86

Abu Khaythama narrated to us, Ibn Idris narrated to us, Muhammad ibn ‘Amr narrated to us, from Abu Salamah, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "The most excellent of the believers in faith are those of them with the best character, and the best of you are the best of you to their women."