Musannaf Ibn Abi Shayba 36:181

Al-Fadl ibn Dukayn narrated to us, he said: Ibn al-Ghasil narrated to us, from Hamza ibn Abi Usayd, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said on the day of Badr, when we lined up for Quraysh and they lined up for us: "When they approach you, shoot them with arrows."