Malik related to me from Ayyub ibn Musa from Muawiya ibn Abdullahibn Badr al-Juhani that his father informed him that he stopped with apeople on the way to Syria and he found a purse which had eightydinars in it. He mentioned that to Umar ibn al-Khattab. Umar said tohim, "Announce it at the doors of the mosques and mention it toeveryone who comes from Syria for a year. When a year passes, it isyour business."
USC-MSA web (English) reference: Book 36, Hadith 47
Arabic reference: Book 36, Hadith 1450