Musnad Abu Ya'la al-Mawsili 155:13

Muhammad ibn Sahl ibn ‘Askar narrated to us, Muhammad ibn Yusuf al-Firyabi narrated to us, Sufyan ibn ‘Uyaynah narrated to us, from al-Zuhri, from Sa‘id ibn al-Musayyib, from Abu Hurayrah, in a marfu‘ (elevated) manner, he said: "Indeed, in Paradise there is a tree; the rider travels in its shade for one hundred years without crossing it. And recite, if you wish: 'And shade extended' (al-Waqi‘ah: 30)."