Musnad Ahmad 27:545

Yazid narrated to us, Husayn ibn Dhakwan informed us, from ‘Amr ibn Shu‘ayb, Sulayman, the freed slave of Maymunah, narrated to me, I heard ‘Abdullah ibn ‘Umar say: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "Do not perform a prayer twice in one day."