Musnad Ahmad 30:920

Abu Kamil narrated to us, Hammad narrated to us, from Thabit, from Abu Rafi’, from Abu Hurairah, from the Prophet, peace and blessings of Allah be upon him, who said: "There was a tree that was harming the people of the road, so a man cut it down and moved it away from the road, and he was entered into Paradise because of it."