Musnad Ahmad 30:3130

Surayj narrated to us, Fulayh ibn Sulayman narrated to us, Hilal ibn Ali narrated to us, from Abd al-Rahman ibn Abi Amrah, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The space of a bow, or a whip, in Paradise is better than that upon which the sun rises and sets."