Sunan an-Nasa'i 2494

Qutaybah reported: Abu Awanah narrated to us, from Ubayd Allah ibn al-Akhnas, from Amr ibn Shuayb, from his father, from his grandfather, who said: The Messenger of Allah ﷺ was asked about found property. He said: If it is found on a frequented road or in an inhabited settlement, announce it for a year. If its owner comes, return it to him; otherwise, it is yours. As for what is found neither on a frequented road nor in an inhabited settlement, and buried treasure, one fifth is due.