سنن أبي داود

Narrated 'Abd al-Rahman b. Yazid: On the authority of Ibn Mas'ud: When Ibn Mas'ud came to the largest jamrah, he stood with the House (the Ka'bah) on his left and Mina on his right, and he thew seven pebbles at the jamrah. Then he said: Thus he did throw to whom Surat al-Baqarah was sent down.