Musnad Ahmad 119:3

Ahmad ibn al-Hajjaj narrated to us, Jarir ibn Abd al-Hamid narrated to us, from Yazid ibn Abi Ziyad, from Mujahid, from Abd al-Rahman ibn Safwan, who said: "I saw the Messenger of Allah (peace and blessings of Allah be upon him) clinging to the door, between the Black Stone and the door." And I saw the people clinging to the House with the Messenger of Allah (peace and blessings of Allah be upon him).