Musnad Ahmad 28:111

Yahya ibn Hammad narrated to us, Abu 'Awanah and 'Abd al-Samad narrated to us, he said: My father narrated to me, from 'Ata' ibn al-Sa'ib, from his father, from 'Abdullah ibn 'Amr, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Worship the Most Merciful, spread peace, and feed food; you will enter the Gardens." 'Abd al-Samad said: "You will enter Paradise."