Musannaf Ibn Abi Shayba 36:378

Ali ibn Mushir and Waki’ narrated to us, from Zakariya, from al-Sha’bi, from Abdullah ibn Muti’, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "No Qurayshi shall be killed by *sabran* (bound/held captive for execution) after this day, ever."