Musnad Ahmad 1012:84

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from Mahmud ibn al-Rabi', from 'Ubadah ibn al-Samit, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There is no prayer for the one who does not recite the Mother of the Qur'an and what comes after it."