Musnad Ahmad 1060:65

Ibn Numayr narrated to us, Yahya narrated to us, from ‘Adi ibn Thabit, from ‘Abdullah ibn Yazid al-Khatmi, from Abu Ayyub al-Ansari: "That he prayed with the Messenger of Allah, may Allah bless him and grant him peace, during the Farewell Pilgrimage, the Maghrib prayer and the final ‘Isha’ prayer at Muzdalifah."