Abu Dawud Book 3, Hadith Number 1706.
Narated By Abdullah ibn Amr ibn al-‘As : The Apostle of Allah (PBUH) was asked about the hanging fruit. He replied: If a needy person takes some and does not take a supply away in his garment, he is not to be blamed, but he who carries any of it away is to be find twice the value and punished, and he who steals any of it after it has been put in the place where dates are dried is to have his hand cut off if its value reaches the price of a shield. Regarding stray camels and sheep he mentioned the same as others have done. He said: He was asked about finds and replied: If it is in a frequented road and a large town, make the matter known for a year, and if its owner comes, give it to him, but if he does not, it belongs to you. If it is in a place which has been a waste from ancient time, or if it is a hidden treasure (belonging to the Islamic period), it is subject to the payment of the fifth.