Musnad Abu Ya'la al-Mawsili 154:64

Zuhayr narrated to us, Affan narrated to us, Hammad narrated to us, Humayd informed us, from Bakr ibn Abdullah, from Ibn Umar: That the Prophet (peace and blessings of Allah be upon him) prayed Dhuhr, Asr, Maghrib, and Isha at al-Batha. Then he slept a light sleep, then he entered Makkah. And Ibn Umar used to do that.