Sufyan bin 'Uyaynah سفيان بن عيينة · The Chapters on Lost Property

He said: “Announce it for a year, then if someone describes it with its features, return it to him. If no one claims it, then remember the features of its leather bag and strap, and consume it (use it). Then if its owner comes along, give it to him.”

“One fifth is due on buried treasure.”