Malik related to me from Nafi that a man found something and went to Abdullah ibn Umar and said to him, "I have found something. What do you think I should do about it?" Abdullah ibn Umar said to him, "Publicise it!" He said, "I have done so." He said, "Do it again." He said, "I have done so." Abdullah said, "I do not order you to use it. If you wished, you could have left it."
Muwatta Malik Book 36, Hadith 65
← Previous Hadith Malik related to me from Ayyub ibn Musa from Muawiya ibn Abdullah ibn Badr al-Juhani that his father informed him that he stopped with a people on the way to Syria and he found a purse which had eighty dinars in it. He mentioned that to Umar ibn al-Khattab. Umar said to him, "Announce it at the doors of the mosques and mention it to everyone who comes from Syria for a year. When a year passes, it is your business."

Muwatta Malik Book 36, Hadith 64 Next Hadith → Yahya said that he heard Malik say, "What is done in our community about a slave who finds something and uses it before the term which is set for finds has been reached, and that is a year, is that it is against his person. Either his master gives the price of what his slave has used, or he surrenders his slave to them as compensation. If he withheld it until the term was reached which is set for finds and he used it, it is a debt against him which follows him and it is not against his person and there is nothing against his master in it."

Muwatta Malik Book 36, Hadith 66