Musnad Ahmad 31:465

'Abd al-Samad narrated to us, Aban narrated to us, Qatadah narrated to us, from Ibn Abi 'Utbah, from Abu Sa'id, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "The House shall be performed Hajj to after the emergence of Gog and Magog."