Bava Metzia2: 8
מָצָא סְפָרִים — קוֹרֵא בָהֶן אַחַת לִשְׁלֹשִׁים יוֹם; וְאִם אֵינוֹ יוֹדֵעַ לִקְרוֹת — גּוֹלְלָן. אֲבָל לֹא יִלְמֹד בָּהֶן בַּתְּחִלָּה, וְלֹא יִקְרָא אַחֵר עִמּוֹ.  מָצָא כְסוּת — מְנַעֲרָהּ אַחַת לִשְׁלֹשִׁים יוֹם, וְשׁוֹטְחָהּ לְצָרְכָּהּ, אֲבָל לֹא לִכְבוֹדוֹ.  כְּלֵי כֶסֶף וּכְלֵי נְחֹשֶׁת — מִשְׁתַּמֵּשׁ בָּהֶן לְצָרְכָּן, אֲבָל לֹא לְשָׁחֳקָן.  כְּלֵי זָהָב וּכְלֵי זְכוּכִית — לֹא יִגַּע בָּהֶן עַד שֶׁיָּבֹא אֵלִיָּהוּ.  מָצָא שַׂק אוֹ קֻפָּה, וְכָל דָּבָר שֶׁאֵין דַּרְכּוֹ לִטּוֹל — הֲרֵי זֶה לֹא יִטֹּל.
[If] he found scrolls, he may read them once in thirty days; if he does not know how to read, he should roll them. However, he should not study in them for the first time, nor should another read with him.  [If] he found a garment, he should shake it out once in thirty days, and spread it out for its benefit, but not for his honor.  [As for] silverware and cop-perware —- he should use them for their benefit, but not to wear them out.  [As for] gold utensils and glassware —- he may not touch them until Elijah comes.  [If] he found a sack or a basket, or anything he is not accustomed to taking, he need not take [it].