Zuhayr ibn Harb narrated to us, Isma'il ibn 'Ulayyah narrated to us, from 'Ali ibn al-Mubarak, Yahya ibn Abi Kathir narrated to us, Abu Sa'id, the freed slave of al-Mahri, narrated to me, from Abu Sa'id al-Khudri, that the Messenger of Allah, peace and blessings be upon him, sent an expedition to Banu Lihyan — from Hudhayl — and said: "Let one of every two men go forth, and the reward is shared between them."