Musnad Ahmad 33:546

Abu Salamah al-Khuza'i narrated to us, Malik narrated to us, from Ja'far, from his father, from Jabir ibn Abdullah: "That the Messenger of Allah (peace and blessings of Allah be upon him) began with the Black Stone, so he performed ramal (brisk walking) until he returned to it three times, and he walked four times."