Musnad Ahmad 643:5

Muhammad ibn Ja'far narrated to us, he said: Shu'bah narrated to us, from 'Abdullah ibn Abi al-Safar, he said: I heard al-Sha'bi, he said: 'Urwah ibn Mudarris narrated to us, he said: I came to the Messenger of Allah, may Allah bless him and grant him peace, while he was at Jam' (Muzdalifah), and I said: "O Messenger of Allah, is there a Hajj for me?" He said: "Whoever prays this prayer with us in this place, and stands with us at this station, until he departs—having departed before that from 'Arafat by night or by day—then his Hajj is complete, and he has fulfilled his rites."