Musnad Ahmad 30:811

Yazid narrated to us, Abdullah ibn 'Awn informed us, from Abd al-Rahman ibn Ubayd Abu Muhammad, from Abu Hurayrah, who said: "I was with the Messenger of Allah, peace and blessings of Allah be upon him, at a funeral, and I was walking. Whenever I walked, he would get ahead of me, so I would jog, and then I would get ahead of him. A man beside me turned to me and said: 'The earth is folded for him, and he is the friend (Khalil) of Ibrahim.'"