Musannaf Ibn Abi Shayba 13:3078

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from Simak, from Ikrimah, from Ibn Abbas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever builds a structure, let him support it with the wall of his neighbor."