Al-Lu'lu Wal-Marjan 1124 — The Book of Al-Luqata (a well-tied purse or pouch or things lost/picked up by somebody)

Ubai bin Ka'b Narrated from:

I found a bag containing a hundred Dinâr in the life-time of the Prophet ﷺ and took it to the Prophet ﷺ who said to me, "Make public announcement about it for one year." So, I announced it for one year and went to the Prophet ﷺ who said, "Announce it publicly for another year." So, I announced it for another year. I went to him again and he said, "Announce for another year." So I announced for still another year.I went to the Prophet ﷺ for the fourth time, and he said, "Remember the amount of money, the description of its container and the string it is tied with, and if its owner comes, give it to him; otherwise, utilize it." ( Sahih Al-Bukhâri, Hadîth No. 616, Vol. 3 )