Musnad Ahmad 1153:1081

Yazid narrated to us, he said: Muhammad ibn Ishaq informed us, from Yahya ibn 'Abbad ibn 'Abdullah ibn al-Zubayr, from his father, from 'Aishah, she said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "Whoever performs a prayer in which he does not recite the Mother of the Qur'an, it is deficient."