Sunan Abi Dawud

Sulaiman b. 'Amr b. Ahwas reported on the authority of his mother:I saw the Messenger of Allah (ﷺ) near the Jamrat al-Aqabah (the third or last pillar) riding (on a camel) and I saw a pebble between his fingers. He threw the pebbles and the people also threw (stones at the Jamrah)