And Sa'id ibn Mansur narrated to us, saying: 'Abdullah ibn Wahb narrated to us, saying: 'Amr ibn al-Harith informed me, from Yazid ibn Abi Habib, from Yazid ibn Abi Sa'id, the freed slave of al-Mahri, from his father, from Abu Sa'id al-Khudri, that the Messenger of Allah, peace and blessings be upon him, sent to the Banu Lahyan, saying: "Let one man go forth from every two men." Then he said to the one who stayed behind: "Whichever of you remains behind to look after the one who goes forth in his family and his wealth with goodness, he will have half the reward of the one who goes forth."