Musannaf Ibn Abi Shayba 13:2674

Abu Bakr narrated to us, he said: Muhammad ibn Bishr narrated to us, he said: Sa'id narrated to us, from Qatadah, from al-Nadr ibn Anas, from Bashir ibn Nahik, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "The *'Umra* (gift of a house for life) is permissible for its people, or it is an inheritance for its people."