Musnad Ahmad 22:17

Rawh narrated to us, Shu'bah narrated to us, from 'Amir al-Ahwal, from 'Ata', from Ibn 'Abbas, from al-Fadl: "He was the rider behind the Prophet, may Allah bless him and grant him peace, and he continued to recite the Talbiyah until he threw the pebble at the Jamrah."