Musnad Ahmad 22:25

Ya'la and Muhammad, the sons of 'Ubayd, said: 'Abd al-Malik narrated to us, from 'Ata', from 'Abd Allah ibn 'Abbas, from al-Fadl, who said: "The Messenger of Allah (peace and blessings of Allah be upon him) departed from 'Arafat, and Usamah ibn Zayd was riding behind him. The she-camel stumbled with him while he was standing at 'Arafat before he departed, and he was raising his hands, not exceeding his head. When he departed, he traveled at his ease until he reached Jam' (Muzdalifah). Then he departed from Jam', and al-Fadl was riding behind him. Al-Fadl said: The Prophet (peace and blessings of Allah be upon him) did not cease reciting the Talbiyah until he threw the pebbles at the Jamrah."