Mishkat al-Masabih

Ibn ‘Abbas told that ‘Umar b. al-Khattab said he had heard God’s messenger say when he was in the wadi of al-‘Aqiq, "A visitant from my Lord came to me last night, telling me to pray in this blessed wadi and [consider its Reward equivalent to that for] an ’umra incorporated in a hajja.” A version has, "and [consider its reward equivalent to that for] an ’umra and a hajja” Bukhari transmitted it.