Hazrat Ubayy bin Ka'b (may Allah be pleased with him) narrated that during the time of the Prophet (peace and blessings of Allah be upon him), I found a pouch in which there were one hundred dinars. I took it to the Prophet (peace and blessings of Allah be upon him). He said, "Announce it for one year." I announced it for one year and then presented myself (saying the owner has still not been found). The Prophet (peace and blessings of Allah be upon him) said, "Announce it for another year." I announced it for another year and then presented myself. This time too, he said, "Announce it for another year." I again announced it for a year, and when I presented myself the fourth time, the Prophet (peace and blessings of Allah be upon him) said, "Keep in mind the amount of money, the string of the pouch, and its appearance. If its owner comes, give it to him; otherwise, spend it on your needs."