Musnad Ahmad 32:701

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, who said: Anas ibn Malik informed me, "That the Messenger of Allah, peace and blessings of Allah be upon him, used to pray the 'Asr prayer, and the one going would go to al-'Awali while the sun was still high." Al-Zuhri said: "And al-'Awali is two miles from Medina, or three—I think he said: and four."