Musnad Ahmad 414:1

'Abdullah ibn Ahmad said: 'Ubaydullah ibn 'Umar al-Qawariri and Khalaf ibn Hisham narrated to us, they said: 'Amir ibn Abi 'Amir al-Khazzaz narrated to us, from Ayyub ibn Musa, from his father, from his grandfather, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "A father has not gifted his child a gift better than good manners."