Mishnayos Shekalim Perek 5 Mishnah 6

There were two special chambers in the Temple, one called the chamber of secret gifts and the other one called the chamber of vessels. The mishna explains the purpose of these chambers. In the chamber of secret gifts, sin-fearing people put money secretly and poor people of noble descent support themselves from it secretly. With regard to the chamber of vessels, anyone who donates a vessel to the Temple drops it inside that chamber, and once every thirty days the treasurers open it. And any vessel that they found for it a use for Temple maintenance, they leave it for that purpose, and the rest are sold, and their monetary value is allocated to Temple maintenance.

שְׁתֵּי לְשָׁכוֹת הָיוּ בַּמִּקְדָּשׁ, אַחַת לִשְׁכַּת חֲשָׁאִים, וְאַחַת לִשְׁכַּת הַכֵּלִים, לִשְׁכַּת חֲשָׁאִים יִרְאֵי חֵטְא נוֹתְנִים לְתוֹכָה בַּחֲשַׁאי, וַעֲנִיִּים בְּנֵי טוֹבִים מִתְפַּרְנְסִים מִתוֹכָהּ בַּחֲשַׁאי. לִשְׁכַּת הַכֵּלִים, כָּל מִי שֶׁהוּא מִתְנַדֵּב כֶּלִי, זוֹרְקוֹ לְתוֹכָהּ. וְאַחַת לִשְׁלשִׁים יוֹם, גִּזְבָּרִין פּוֹתְחִין אוֹתָהּ. וְכָל כְּלִי שֶׁמּוֹצְאִין בּוֹ צֹרֶךְ לְבֶדֶק הַבַּיִת, מַנִּיחִין אוֹתוֹ. וְהַשְּׁאָר נִמְכָּרִין בִּדְמֵיהֶן וְנוֹפְלִין לְלִשְׁכַּת בֶּדֶק הַבַּיִת: