Musannaf Ibn Abi Shayba 13:2759

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from Mansur, from al-Hakam, from the one who heard Ali and Abdullah saying: The Messenger of Allah (may Allah bless him and grant him peace) decreed the right of pre-emption (shuf’ah) for the neighbor.