Musnad Ahmad 22:1

'Abbad ibn 'Abbad narrated to us, from Ibn Jurayj, from 'Ata', from Ibn 'Abbas, from al-Fadl ibn 'Abbas, that he was the rider behind the Prophet, may Allah bless him and grant him peace, from Jam' (Muzdalifah), and he did not cease reciting the talbiyah until he threw the pebble at the Jamrah.